Asked by niki
y=2x squared -8x+7 what is this equation in vertex form?
Answers
Answered by
Reiny
y = 2x^2 - 8x + 7
= 2[x^2 - 4x <b>+ 4 - 4</b>] + 7
= 2[(x-2)^2 - 4] + 7
= 2(x-2)^2 - 8 + 7
= 2(x-2)^2 - 1
= 2[x^2 - 4x <b>+ 4 - 4</b>] + 7
= 2[(x-2)^2 - 4] + 7
= 2(x-2)^2 - 8 + 7
= 2(x-2)^2 - 1
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