Question

a B and C are polynomials where a equals 3x - 4 b equals x + 7 C equals x squared + 2 what is a squared minus parentheses b + C in simplest form? ​

Answer 1

8x^2 - 25x +7

Explanation:

Substitute the polynomials in

A^2 - (B+C)

(3x-4)^2 - (x+7+x^2+2), simplify the equation

Using foil method, (9x^2-24x+16) - (x+7+x^2+2)

(9x^2-24x+16)-(x^2+x+9), distribute the minus/negative sign to the second parenthesis

(9x^2-24x+16) - x^2-x-9, combine like terms

8x^2 - 25x +7