Question

Which number completes the perfect square trinomial?
x2 + 20x + _
A. 40
B. 100
C. 25
D. 80

Answer 1

(x+10) would give you a middle term of 20, right ?

Answer 2

I mean (x+10)^2

Answer 3

So its 40?

Answer 4

no, b/c the last term would be 10 * 10

Answer 5

oh wait. one min
i was not paying attention. just woke up.

Answer 6

it's alright :)

Answer 7

:) so if its 10*10 that would be 100! right? hehe

Answer 8

Yeah, you got this !