Question 87551
let h(x)=4x-x^2. Find such that h(a)= -32
H(a) = 4a-a^2=-32
a^2-4a-32=0
(a-8)(a+4)=0
a = 8 or a = -4
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the other problem im having trouble with it 
f(x)= 2x/5x^2-20 

Comment:

What is the question?
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Cheers,
Stan H.