Question

Am I right?

Answer 1

Determine which polynomial is a perfect square trinomial.

25x^2 - 40x - 16
9a^2 - 20a - 25
25b^2 - 15b + 9
16x^2 - 56x + 49

Answer 2

I think C. 25b^2 - 15b + 9

Answer 3

[-b +- sqrt(b^2-4ac) ]/2a

Answer 4

O.o

Answer 5

Thats the quadratic equation.

Answer 6

1. \[25\left( x-\frac{ 4 }{ 5 } \right)^2-32\]
So Number one is not a perfect square

Answer 7

2. Is not a perfect square

Answer 8

3. Is not a perfect square since it can't be factored since it has rational numbers.

Answer 9

I got D

Answer 10

Oh I see what I did wrong. >.< Thank you :)

Answer 11

You bet C: