SOLUTION: kind of confused on this: suppose the functions f and g are defined for all real numbers x as follows: f(x)=3x^2 g(x)=2x write the expressions for (f+g)(x)and (f-g)(x) and ev

Algebra ->  Functions -> SOLUTION: kind of confused on this: suppose the functions f and g are defined for all real numbers x as follows: f(x)=3x^2 g(x)=2x write the expressions for (f+g)(x)and (f-g)(x) and ev      Log On


   

Question 958946: kind of confused on this:
suppose the functions f and g are defined for all real numbers x as follows: f(x)=3x^2
g(x)=2x
write the expressions for (f+g)(x)and (f-g)(x) and evaluate (fxg)(-2)
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
suppose the functions f and g are defined for all real numbers x as follows: f(x)=3x^2
g(x)=2x
write the expressions for
(f+g)(x) = 3x^2 + 2x
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(f-g)(x) = 3x^2-2x
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(fxg)(-2) = f(-2)*g(-2) = 3(4) + 2(-2) = 12-4 = 8
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Cheers,
Stan H.
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