Question

Nick wrote the function p(x) = 17 + 42x – 7x2 in vertex form. His work is below.

Answer 1

Answer:

step 3

Step-by-step explanation:

he should have subtracted 9 to the outside.

whatever you do to the inside you must do to the opposite to the outside

so your final form must be -7(x-3)^2 + 8