Determine which polynomial is a perfect square trinomial.
A. 25x2 − 40x − 16
B. 9a2 − 20a − 25
C. 25b2 − 15b + 9
D. 16x2 − 56x + 49

1/4 and 8/3 because:

the reciprocal if 4 is 1/4 because 4 is used as 4/1 and the opposite of that is 1/4. the opposite of 3/8 is 8/3 so that is the answer.

∠cbe and ∠deb are same-side interior angles.

i took the test

for this pair of functions g(x)=x-2 and f(x)=|x| is (g o f)(a)= |a| -2

step-by-step explanation:

g(x)=x-2

f(x)=|x|

(g o f)(a)=?

(g o f)(x)=g(f(x))

(g o f)(x)=g(|x|)

(g o f)(x)=|x|-2

(g o f)(a)=|a|-2