3 years ago

If f(x)=3^x+10x and g(x)=4x-2 find (f+g)(x)

Mathematics

1 answer:

Alla [95]3 years ago

8 0

f(x)=3^x+10x and g(x)=4x-2 find (f+g)(x)

I believe this means we add the two functions and simplify:

3^x + 10x + 4x - 2 --- add the only two "like" terms, 10x and 4x. We can't do anything about 3^x or 2, because there's nothing else like them in the equation.

3^x + 14x - 2

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I need help with number 17 please, and show work. I keep getting different answers. 1

Alecsey [184]

$\frac{(x+1)(x-1)}{(x+1)(x-1)(x+1)} - \frac{2(x-1)}{(x+1)(x-1)(x+1)} + \frac{3(x+1)}{(x+1)(x-1)(x+1)}$

= $\frac{x^2-2-2x+2+3x+3}{(x+1)(x-1)(x+1)}$
= $\frac{x^2+x+4}{(x+1)(x-1)(x+1)}$ is what I got.