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2 December, 00:36

What is f (x) = 7x2 + 42x written in vertex form?

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  1. 2 December, 00:50
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    Hello,

    y=7x²+42x

    ==>y=7 (x²+2*3*x+9) - 63

    ==>y=7 (x+3) ²-63
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