Question

What is the first step in writing f(x) = 6x2 + 5 - 42x in vertex form?

Answer 1

factor out the co-efficient of x^2 (x squared) from all the x terms, which is 6.

Explanation:

f(x) = 6(x-h)^2 + k

h = -42/2(6) = -7/2

then plot h in as y to find k