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If f(x)=2x^2−3x+1 and g(x)=x+5, what is f(g(x))?
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If f(x)=2x^2−3x+1 and g(x)=x+5, what is f(g(x))?

User Onur Bebin
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1 Answer

1 vote
If
f(x)=2x^(2)-3x+1, then


f(g(x))=2[g(x)]^(2)-3g(x)+1\\ \\ f(g(x))=2(x+5)^(2)-3(x+5)+1\\ \\ f(g(x))=2(x^(2)+10x+25)-3(x+5)+1\\ \\ f(g(x))=2x^(2)+20x+50-3x-15+1\\ \\ f(g(x))=2x^(2)+20x-3x+50-15+1\\ \\ \boxed{\begin{array}{c}f(g(x))=2x^(2)+17x+36 \end{array}}

User Offroff
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