Question

Fast and Urgent Help xx

Answer 1

the second term is twice the sqrt of the last term

Answer 2

Know the idea?

The same idea for completing a square!

Answer 3

so, you get the last term by dividing the second term in half and then getting it's square. That's 26/2=13*13=169

Answer 4

Oh okay um kind og confused

Answer 5

what's the formula for a perfect square trinomial?

Answer 6

AX^2+bx+c?

Answer 7

it's
\[a ^{2}+2ab+b ^{2}\], right?

Answer 8

right

Answer 9

Oh right right sorry

Answer 10

from that, you can may get that b= ab/2

Answer 11

13?

Answer 12

yep!

Answer 13

Thank you darling xx

Answer 14

that's b! however, what you need is the third term so you have to square it

Answer 15

Oh okay

Answer 16

so \[b ^{2}\] is?

Answer 17

169

Answer 18

@HannanSM

Answer 19

Yes, \(b^2=169\)

Answer 20

that's right. :) This method is called "completing the square". It will come in handy in the future so familiarize yourself with it.

Answer 21

That is what @HannanSM is trying to do!
Thanks for her!