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Given f(x) = x + 2, g(x) = x, find x for (fg)(x) = 8

Quadratic equations and inequalities, variation equations, function notation, systems of equations, etc.
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The Stranger
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Given f(x) = x + 2, g(x) = x, find x for (fg)(x) = 8

Postby The Stranger » Thu Oct 07, 2010 3:11 pm

Given f(x)=x+2 and g(x)=x, find the value(s) of x for which (fg)(x)=8

I'm completely lost.
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Re: Given f(x) = x + 2, g(x) = x, find x for (fg)(x) = 8

Postby buddy » Thu Oct 07, 2010 3:35 pm

(fg)(x) means to times f and g
then put it equal to 8
solve for x
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Re: Given f(x) = x + 2, g(x) = x, find x for (fg)(x) = 8

Postby The Stranger » Thu Oct 07, 2010 4:37 pm

Thanks, I got it.
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