Question

Complete the square to write y = 3x2 + 12x + 7 in vertex form, y = a(x - h)2 + k.

y = 3(x2 + 4x) + 7 y = 3(x2 + 4x +4) + 7 -
When the above expression is written in vertex form, a is _ , h is _ , and k is _.

Answer 1

12

3,-2,-5

Explanation:

Just got it right on edge

Answer 2

a=3

h=-2

k=-5

Explanation:

The equation
`y=3x^2+12x+7` writen in vertex form is:

`y = 3(x^2 + 4x) + 7 \\y = 3(x^2 + 4x +4) + 7 - 12\\y=3(x+2)^2-5`