Answer:
x² + 16x + 64
Step-by-step explanation:
To find f(g(x)) , substitute x = g(x) into f(x), that is
f(x + 7)
= (x + 7)² + 2(x + 7) + 1 ← expand (x + 7)² using FOIL
= x² + 14x + 49 + 2x + 14 + 1 ← collect like terms
= x² + 16x + 64
Answer:
21
Step-by-step explanation:
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Answer:
Step-by-step explanation:
a: 2(-3x - 2)/2 = -3x - 2
c: -(6x +4)/2 = (-6x - 4)/2
d: -3x -2 when the brackets are removed and the terms are multiplied by -1/2
