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If f(x)=1-x+x^2 and g(x)= square root of 5+x what is (f of g) (4)
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If f(x)=1-x+x^2 and g(x)= square root of 5+x what is (f of g) (4)

User Ajt
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f(x) = 1-x +x^2 \\\\g(x) = √(5+x) \\\\g(4) = √(5+4) = \sqrt 9 =3\\\\(f \circ g)(4)\\\\=f(g(4))\\\\=f(3)\\\\=1-3+3^2 \\\\=-2+9\\\\=7

User Mario Galic
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