Math Is Fun Forum

silverpuma

Member

Registered: 2011-06-19

Posts: 80

surd question help needed

Im making progress with my surds diet......yum yum but one has stuck in my throat.  I need a step by step of how you arrive at my textbook answer of 5root2 over 2  the question is ........The sq root18 minus 1 over sq root 2     thanks again for your patience.

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“Men occasionally stumble over the truth, but most of them pick themselves up and hurry off as if nothing ever happened.”  ―  Winston Churchill

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: surd question help needed

Hi;

Is this your problem?

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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.

silverpuma

Member

Registered: 2011-06-19

Posts: 80

Re: surd question help needed

https://www.dropbox.com/s/ddpiqt96ptjla … 447_01.jpg

The link will explain better sorry for the torturous sentence in prevoius post.....I think ive got surds flu.....agggghhhh

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“Men occasionally stumble over the truth, but most of them pick themselves up and hurry off as if nothing ever happened.”  ―  Winston Churchill

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: surd question help needed

Hi;

I am getting

Combine the fraction.

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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.

silverpuma

Member

Registered: 2011-06-19

Posts: 80

Re: surd question help needed

These are the textbook answers....

https://www.dropbox.com/s/4mbvmuy64j1ym … 408_01.jpg

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“Men occasionally stumble over the truth, but most of them pick themselves up and hurry off as if nothing ever happened.”  ―  Winston Churchill

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: surd question help needed

Hi;

The textbook is correct see post #4.

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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.

silverpuma

Member

Registered: 2011-06-19

Posts: 80

Re: surd question help needed

Thank you lots bobbym your an amazing help as I try to come to grips with all this new information.  If you haven't time to look at the second question I posted in my Dropbox no worries, im happy for help with question ,  but if you can great.....-:)

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“Men occasionally stumble over the truth, but most of them pick themselves up and hurry off as if nothing ever happened.”  ―  Winston Churchill

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: surd question help needed

Hi;

Is that a 5 or a an S?

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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.

silverpuma

Member

Registered: 2011-06-19

Posts: 80

Re: surd question help needed

Sorry for the delay.....it is a 5......thanks

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“Men occasionally stumble over the truth, but most of them pick themselves up and hurry off as if nothing ever happened.”  ―  Winston Churchill

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: surd question help needed

Hi;

Okay, thank you.

There are 2 answers:

and

The book is correct. Try to work your way to the answer on your own for a bit. Post what you get.

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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.

silverpuma

Member

Registered: 2011-06-19

Posts: 80

Re: surd question help needed

Ok bobbym thanks and I, ll do that and post by tomorrow hopefully if holidays dont devour me up -:)

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“Men occasionally stumble over the truth, but most of them pick themselves up and hurry off as if nothing ever happened.”  ―  Winston Churchill

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: surd question help needed

Okay, enjoy the Holiday and post if you can not get it.

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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.

ShivamS

Member

Registered: 2011-02-07

Posts: 3,648

Re: surd question help needed

No Easter Monday or Good Friday here... Canada was better.