h(x)=-x^2+9x

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Solution for h(x)=-x^2+9x equation: 


Simplifying
h(x) = -1x2 + 9x

Multiply h * x
hx = -1x2 + 9x

Reorder the terms:
hx = 9x + -1x2

Solving
hx = 9x + -1x2

Solving for variable 'h'.

Move all terms containing h to the left, all other terms to the right.

Divide each side by 'x'.
h = 9 + -1x

Simplifying
h = 9 + -1x

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