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3 years ago

15

How would you write y = –3x2 + 12x – 21 in vertex form?

1 answer:

ladessa [460]3 years ago

5 0

The vertex form of that expression would be y = 3 ( x +2 )squared - 25. This is done by transporting first the -21 to the other side then simplifying the 3(x2 + 4x). Then making the "x2 + 4x" a perfect binomial we need to add 4 and that makes it "x2 + 4x + 4". Then after that we now have the vertex form of <span>y = 3 ( x +2 )squared - 25</span>

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Answer:

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Step-by-step explanation:

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