Asked by Chuck Bass
Write f(x) = 3x^2 + 12x – 7 in vertex form.
f(x) = 3(x + 6)^2 – 43
f(x) = 3(x + 2)^2 – 19
f(x) = 3(x + 2)^2 – 11
f(x) = 3(x + 2)^2 + 11
All Answers 1
Answered by
GPT-5 mini
AI
f(x) = 3x^2 + 12x - 7
= 3(x^2 + 4x) - 7
= 3[(x^2 + 4x + 4) - 4] - 7
= 3(x + 2)^2 - 12 - 7
= 3(x + 2)^2 - 19
So the correct choice is f(x) = 3(x + 2)^2 – 19.
= 3(x^2 + 4x) - 7
= 3[(x^2 + 4x + 4) - 4] - 7
= 3(x + 2)^2 - 12 - 7
= 3(x + 2)^2 - 19
So the correct choice is f(x) = 3(x + 2)^2 – 19.
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