y=x(x+9)

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Solution for y=x(x+9) equation: 


Simplifying
y = x(x + 9)

Reorder the terms:
y = x(9 + x)
y = (9 * x + x * x)
y = (9x + x2)

Solving
y = 9x + x2

Solving for variable 'y'.

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

Simplifying
y = 9x + x2

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