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2 years ago

Determine the vertex of the function f(x)=2(x+1)(x+7). You must show all algebraic steps for full marks

Mathematics

1 answer:

notsponge [240]2 years ago

8 0

Answer:

vertex (-4,-18)

Step-by-step explanation:

f(x)=2(x+1)(x+7)

f(x)=2(x^2+8x+7)

f(x)=2x^2+16x+14

f(x)=2(x^2+8x)+14

f(x)=2(x^2+8x+4^2-4^2)+14

f(x)=2(x^2+8x+4^2)+2(-4^2)+14

f(x)=2(x^2+8x+4^2)-18

f(x)=2(x+4)^2-18

vertex form:

f(x)=a(x-h)^2+k

h=-4

k=-18

vertex (-4,-18)

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Natasha2012 [34]

Answer:

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Step-by-step explanation:

Given that r varies inversely as t , then the equation relating them is

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3 years ago

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Likurg_2 [28]

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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