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What is f(x) = 7x^2 + 42x written in vertex form?

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5 votes

D on edg 2021 :)

i hope i could help

User Alex Borsody
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hello :
f(x) =7x²+42x
f(x) = 7(x²+6x)
f(x) = 7 (x²+2(3)(x)+3²-3²)
f(x) = 7 ((x+3)² -9)
f(x) =7(x+3)² -63....( vertex form)
User Mohamed Benkedadra
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