Question

Fill in the blank to make the expression a perfect square.

v^2 + 8v + ___

Answer 1

two steps
what is half o f 8?

Answer 2

...

Answer 3

you want
(v + a)v + a) = v^2 + 8v + a^2

and 2av must equal 8v

so what is a equal to?

Answer 4

(8/2)^2=4^2=16
For perfect square problems, you just divide by 2 for your second term and just square it.

Answer 5

Thanks! :-)

Answer 6

You're welcome!