angie68484 angie68484

09-08-2020
Mathematics

contestada

If 8(x) = -2 and g(x) = 2x2 + x = 3, find ( +g)(x).

A. 2x2 + 2x-5
B. x - 6
C. 2x - 3+1
D. 2x2 + x +1

If 8x 2 and gx 2x2 x 3 find gx A 2x2 2x5 B x 6 C 2x 31 D 2x2 x 1 class=

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konrad509 konrad509

09-08-2020

[tex](f+g)(f)=f(x)+g(x)\\\\\\f(x)=\dfrac{x}{2}-2\\g(x)=2x^2+x-3\\\\(f+g)(x)=\dfrac{x}{2}-2+2x^2+x-3\\(f+g)(x)=2x^2+\dfrac{x}{2}+\dfrac{2x}{2}-5\\(f+g)(x)=2x^2+\dfrac{3x}{2}-5\\(f+g)(x)=2x^2+\dfrac{3}{2}x-5[/tex]

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