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OpenStudy (anonymous):
Can you check my work? f(x) = 3x and g(x) = x^2 - 5 what is (g * f)(-2)? (x^2 - 5)(3x)(-2) (3x^3 - 15x)(-2) -6x^3 + 30x is this right?
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OpenStudy (isaiah.feynman):
Nope.
OpenStudy (anonymous):
why not??
OpenStudy (solomonzelman):
Redo it.
OpenStudy (anonymous):
I did I don't know what I'm doing wrong?
OpenStudy (anonymous):
I got the same answer ..
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OpenStudy (isaiah.feynman):
No no, you can't multiply f and g and -2 together.
OpenStudy (anonymous):
..why not?
OpenStudy (isaiah.feynman):
Why not? because functions aren't evaluated that way.
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