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Given that f(x)= x^2-1x and g(x)= x+8 calculate f•g(x)
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Given that f(x)= x^2-1x and g(x)= x+8 calculate f•g(x)

User Ramaraj Karuppusamy
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\begin{gathered} f(x)=x^2-x \\ g(x)=x+8 \\ \text{fog(x)}=(x+8)^2-(x+8)=x^2+16x+64-x+8=x^2+15x+72 \\ \text{gof(x)}=(x^2-x)+8=x^2-x+8 \end{gathered}

User R Menke
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