What is a2 – (b + c) in simplest form?

a=8x2 – 25x + 7
b=8x2– 25x + 11
c=10x2 – 25x + 7
d=10x2 – 25x + 11

a, b, and c are polynomials, where:
a = 3x – 4
b = x + 7
c = x2 + 2

Step-by-step explanation:

Here, , and

    ( By putting the values)

=    ( solving the brackets)

=  

=          ( By operating like terms)

⇒

Thus, Option A is correct.

94

step-by-step explanation:

average the numbers and use a variable to figure out the minimum to get a 90.

(79+94+91+92+x)/5=90

x = 94