SOLUTION: The problem that i am working is a composite function. I am not understanding how to solve for the x in the middle. The problem is f(u)= 9u2+5u-4 = g(x)=x+9 i have so far

Question 97333: The problem that i am working is a composite function. I am not understanding how to solve for the x in the middle.

The problem is f(u)= 9u2+5u-4 = g(x)=x+9
i have so far gotten to the conclusion that
9x2+ ? + 770.
How do i get the middle number it's not making since
9x2+729+5x+45-4 is what i have solved. How do i get the middle number x

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
What composite are you looking for: fog(x) or gof(u)
------------
Cheers,
Stan H.
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