Math Is Fun Forum

karategirl1925

Member

Registered: 2013-11-28

Posts: 7

click me! click me!

Heyy ~ I'm Tina
I'm learning stuff at about GCSE - A level standard, and I'm currently working on trying to add/subtract numbers faster mentally and the binomial theorem as well as factorisation problems, freakishly hard, etc.  yeah, so if anyone has any suggestions or tips on simplifying square rooted numbers inside of square rooted numbers and factorising square roots, I'd be happy to know -- I'm in year 8 (I know, I know) and I'm going to take the IMC from the UKMT challenges next year so if anyone has any tips on that then great.
Good byeh ~

If you're looking for a friend then I am a good friend.  Read this, let's be friends together!  I don't mind how good or bad at math you are!!!!

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Mathopolis username: Karategirl2012
top ten in four different competitions!  XD

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: click me! click me!

Hi karategirl1925;

Welcome to the forum.

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In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Bob

Administrator

Registered: 2010-06-20

Posts: 10,621

Re: click me! click me!

hi Tina,

Welcome to the forum. 

so if anyone has any suggestions or tips on simplifying square rooted numbers inside of square rooted numbers and factorising square roots,

I'm not quite sure what you're after here.  Would you give us some examples please?

Bob

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Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

karategirl1925

Member

Registered: 2013-11-28

Posts: 7

Re: click me! click me!

Hi Bob ~
So what I mean is a bit hard to express because we can't show stuff like square roots..(or can we?)
e.g. √17+12√2 is one I've been trying to simplify, and the seventeen plus twelve square rooted two is all inside one massive square root, not seventeen squared etc.
help?
thanks

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Mathopolis username: Karategirl2012
top ten in four different competitions!  XD

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: click me! click me!

Hi;

This is the problem?

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

anonimnystefy

Real Member

From: Harlan's World

Registered: 2011-05-23

Posts: 16,049

Re: click me! click me!

Hi Tina

Welcome to the forum!

Hi bobbym

I'd say this is:

Last edited by anonimnystefy (2013-11-29 16:42:45)

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“Here lies the reader who will never open this book. He is forever dead.
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: click me! click me!

Have you figured what numbers always make this simplification possible?

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

anonimnystefy

Real Member

From: Harlan's World

Registered: 2011-05-23

Posts: 16,049

Re: click me! click me!

No, but I remember the formula:

---

“Here lies the reader who will never open this book. He is forever dead.
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.

Bob

Administrator

Registered: 2010-06-20

Posts: 10,621

Re: click me! click me!

hi Tina,

Sometimes these can be simplified and sometimes not.

You could try setting your expression equal to a + √b and then squaring to see what results.

To make mathematical expressions on the forum you need to use a code called Latex.

eg

These links will be useful:

http://www.mathisfunforum.com/viewtopic.php?id=4397

http://latex.codecogs.com/editor.php

Bob

---

Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

shyclaw

Member

From: Dagoba

Registered: 2015-03-23

Posts: 67

Re: click me! click me!

Heyy ~ I'm Tina
I'm learning stuff at about GCSE - A level standard, and I'm currently working on trying to add/subtract numbers faster mentally and the binomial theorem as well as factorisation problems, freakishly hard, etc.  yeah, so if anyone has any suggestions or tips on simplifying square rooted numbers inside of square rooted numbers and factorising square roots, I'd be happy to know -- I'm in year 8 (I know, I know) and I'm going to take the IMC from the UKMT challenges next year so if anyone has any tips on that then great.
Good byeh ~

If you're looking for a friend then I am a good friend.  Read this, let's be friends together!  I don't mind how good or bad at math you are!!!!

Hi karategirl1925!!!! Im new here. Id love to be ur friend!! just message me.

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"“A Jedi uses the Force for knowledge and defense, never for attack.”

-Yoda

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: click me! click me!

Hi shyclaw;

The report you made is against a member that is long gone.

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

shyclaw

Member

From: Dagoba

Registered: 2015-03-23

Posts: 67

Re: click me! click me!

Oh

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"“A Jedi uses the Force for knowledge and defense, never for attack.”

-Yoda