Math Is Fun Forum

  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

You are not logged in.

#1 2023-09-25 01:38:30

sologuitar
Member
Registered: 2022-09-19
Posts: 467

Number Needed to Complete the Square

Determine the number that should be added to complete the square for the given expression.

p^2 + 14p

Thank you.

Offline

#2 2023-09-25 04:17:22

Bob
Administrator
Registered: 2010-06-20
Posts: 10,475

Re: Number Needed to Complete the Square

Note that

The two expressions have p^2 in it and 2ap if you put a = 7

So add a^2 = 49 and you have a perfect square.

As a general rule find half the middle coefficient (14/2 = 7) and square it (49).

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 smile

Offline

#3 2023-09-25 12:16:53

sologuitar
Member
Registered: 2022-09-19
Posts: 467

Re: Number Needed to Complete the Square

Bob,

Thanks again. I will try a few on my own from the textbook.
I really don't understand how to upload pictures to this site.
Can you share the steps with me? Eventually, I will need to upload geometric and trigonometric pictures. Keep on mind that I don't have a computer or laptop. Can I upload pictures using my android cell phone?
Also, I will not reveal my name in an open forum. I will use my initials instead.

GF

Offline

#4 2023-09-25 14:38:02

amnkb
Member
Registered: 2023-09-19
Posts: 253

Re: Number Needed to Complete the Square

harpazo1965 wrote:

I really don't understand how to upload pictures to this site.
Can you share the steps with me?
Can I upload pictures using my android cell phone?

i think maybe try what they have here or here?

Offline

#5 2023-09-26 01:14:31

sologuitar
Member
Registered: 2022-09-19
Posts: 467

Re: Number Needed to Complete the Square

amnkb wrote:
harpazo1965 wrote:

I really don't understand how to upload pictures to this site.
Can you share the steps with me?
Can I upload pictures using my android cell phone?

i think maybe try what they have here or here?

Do I need to join imgur before proceeding?

Offline

#6 2023-09-26 01:37:07

sologuitar
Member
Registered: 2022-09-19
Posts: 467

Re: Number Needed to Complete the Square

Bob wrote:

Note that

The two expressions have p^2 in it and 2ap if you put a = 7

So add a^2 = 49 and you have a perfect square.

As a general rule find half the middle coefficient (14/2 = 7) and square it (49).

Bob

Let me see.

(14/2)^2 = (7)^2 = 49

The missing number that completes the square is 49.

You say?

Offline

#7 2023-09-26 06:53:29

amnkb
Member
Registered: 2023-09-19
Posts: 253

Re: Number Needed to Complete the Square

harpazo1965 wrote:
Bob wrote:

The two expressions have p^2 in it and 2ap if you put a = 7

So add a^2 = 49 and you have a perfect square.

Let me see.

(14/2)^2 = (7)^2 = 49

The missing number that completes the square is 49.

You say?

yes that is what he said

big_smile

Offline

#8 2023-09-26 13:36:34

sologuitar
Member
Registered: 2022-09-19
Posts: 467

Re: Number Needed to Complete the Square

amnkb wrote:
harpazo1965 wrote:
Bob wrote:

The two expressions have p^2 in it and 2ap if you put a = 7

So add a^2 = 49 and you have a perfect square.

Let me see.

(14/2)^2 = (7)^2 = 49

The missing number that completes the square is 49.

You say?

yes that is what he said

big_smile

Ok. Cool.

Offline

Board footer

Powered by FluxBB