Question

Help with Vertex form

Answer 1

f(x) = 2x^2 + 8x + 7

is this 2(x+2)^2-1

Answer 2

@ganeshie8

Answer 3

one easy check is to expand it and see if you get f(x) back

Answer 4

2(x+2)^2-1

2(x^2 + 4x + 4) - 1

2x^2 + 8x + 8 - 1

2x^2 + 8x + 7

Answer 5

which is same as f(x)
so you're good :)

Answer 6

soryy i am back :D