SOLUTION: let f(x)= 3x-1 and g(x)= x^2+1. Evaluate (f*g)(-1)
Here is what I did so far before getting stuck:
(3x-1)(x^2+1)(-1)
(3x^3+3x-x^2-1)(-1)
I think I am supposed to factor out
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-> SOLUTION: let f(x)= 3x-1 and g(x)= x^2+1. Evaluate (f*g)(-1)
Here is what I did so far before getting stuck:
(3x-1)(x^2+1)(-1)
(3x^3+3x-x^2-1)(-1)
I think I am supposed to factor out
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Question 439719: let f(x)= 3x-1 and g(x)= x^2+1. Evaluate (f*g)(-1)
Here is what I did so far before getting stuck:
(3x-1)(x^2+1)(-1)
(3x^3+3x-x^2-1)(-1)
I think I am supposed to factor out the 3, but not sure if that is possible, Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! let f(x)= 3x-1 and g(x)= x^2+1. Evaluate (f*g)(-1)
Here is what I did so far before getting stuck:
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1st determine f*g:
f*g = (3x-1)(x^2+1) = 3x^3-x^2+3x-1
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2nd evaluate at x=-1
(f*g)(-1) = 3(-1)^3-(-1)^2+3(-1)-1
= 3*-1 - 1 -3 -1
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= -8
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Cheers,
Stan H.
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