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Suppose g(x)=f(2x) when f(x)=x^2-4x-5. Find the standard expression for g(x). Please show steps.
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Suppose g(x)=f(2x) when f(x)=x^2-4x-5. Find the standard expression for g(x). Please show steps.
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Jul 4, 2019
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Suppose g(x)=f(2x) when f(x)=x^2-4x-5. Find the standard expression for g(x).
Please show steps.
Mathematics
middle-school
CopperMan
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we have that
f(x)=x²-4x-5
g(x)=f(2x)
step 1
find --------> f(2x)
that means that the variable is now going to be 2x instead of x
so
f(2x)=(2x)²-4(2x)-5------------> 4x²-8x-5
therefore
f(2x)=4x²-8x-5
and
g(x)=4x²-8x-5
the answer is
g(x)=4x²-8x-5
Bach
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Jul 11, 2019
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Bach
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