Question

Put the function y=8x2+16x+20

in vertex form f(x)=a(x-h)2+k
and determine the values of a,h
and k

Answer 1

a=8

h=-1

k=19

Explanation:

y=8(x^2+2x) + 20

completing the square:

y=8(x^2+2x+1)+20-1

y=8(x+1)^2+19

a=8, h=-1, k=19