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For f(x) = 2x+1 and g(x) = y2 - 7, find (f+ g)(x).

For Fx 2x1 And Gx Y2 7 Find F Gx class=

Sagot :

Answer:

D

Step-by-step explanation:

When you look for (f+g)(x), we are in essence say that we're looking for f(x)+g(x)

=(2x+1)+(x^2-7).        (substitute for f(x) and g(x))

=2x+1+x^2-7.            (remove the brackets by substituting positive 1 into g(x))

=2x+x^2-6                (add like terms- in this case 1-7=6)

=x^2+2x-6                 (rearrange the equation)

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