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The first three steps in writing f(x) = 40x + 5x2 in vertex form are shown.

User Rolo
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2 Answers

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5x(8+x)
Is the correct answer for vertex form
User Darren Felton
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The answer is f(x)=5(x+8)-80f ( x ) = 5 ( x + 8 ) − 80

User Typedef
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