blueheart26 blueheart26

06-09-2016
Mathematics

contestada

If f(x) = x 2 + 1 and g(x) = 3x + 1, find f(-1) + 5g(-3).

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dalendrk dalendrk

06-09-2016

[tex]f(x)=x^2+1\\f(-1)-subtitute\ the\ value\ of\ x\ to\ the\ equation:\\\\f(-1)=(-1)^2+1=1+1=2\\\\g(x)=3x+1\\g(-3)-subtitute\ the\ value\ of\ x\ to\ the\ equation:\\\\g(-3)=3\cdot(-3)+1=-9+1=-8\\\\f(-1)+5g(-3)=2+5\cdot(-8)=2-40=-38[/tex]

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