Question

(01.08)

Let f(x) = x + 7 and g(x) = x - 4. Find f(x) · g(x).
A x2 – 3x - 28
B Ox² – 3x - 11
C Ox2 + 3x - 28
D 0x² + 3x-11

Answer 1

answer : C

Explanation:

Let f(x) = x + 7 and g(x) = x - 4.

f(x) · g(x)=(x+7)(x-4) = x² -4x+7x -28

f(x) · g(x)=x² +3x -28 ....answer : C