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4 years ago

5

Grace is 7 years older than Elena. Grace is also 15 years old.

1 answer:

Alex73 [517]4 years ago

4 0

The 3rd one is the answer

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Step-by-step explanation:

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Perform the indicated operation <br> g(x)=x^3+5x and f(x)=2x-2 <br> Find (g o f)(x)

Blababa [14]

Answer:

g(f(x)) = 8x^3-24x^2+34x-18

Step-by-step explanation:

The composition is ...

$(g\circ f)(x)=g(f(x))=g(2x-2)\\\\=(2x-2)^3+5(2x-2)\\\\=(2x)^3 +3(-2)(2x)^2+3(-2)^2(2x)+(-2)^3+10x-10\\\\=8x^3-24x^2 +24x-8+10x-10\\\\\boxed{(g\circ f)(x)=8x^3-24x^2+34x-18}$

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2 years ago