Math
posted by Isaac
Determin x if f(g(x))=0 for the following
f(x) = 3x2
g(x) =5x+5

Reiny
3(5x+5)  2 = 0
15x + 15  2 = 0
15x = 13
x = 13/15
check:
g(13/15) = 5(13/15) + 5
= 2/3
f(2/3) = 3(2/3)  2
= 22 = 0
my answer is correct
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