Question

Which function is equivalent to {x)=-7(x+9)2 - 3, OOO (x)=-7x4- 126x-570 ix)=-7x2 + 18x+ 78 (x)=-7x2 - 126x-546 f(x)=-7x2 +564 o

Answer 1

a) f(x) = -7x²-126x -570

1) Since the function is f(x) = -7(x+9)²-3, let's expand it to get to know its equivalent:

f(x) = -7(x+9)²-3 Expand the binomial

f(x) = -7(x²+18x+81)-3 Distribute the factor -7

f(x) = -7x²-126x -567-3

f(x) = -7x²-126x -570

2) So the answer is a) f(x) = -7x²-126x -570