y=-0.2x(x-20)

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Solution for y=-0.2x(x-20) equation: 


Simplifying
y = -0.2x(x + -20)

Reorder the terms:
y = -0.2x(-20 + x)
y = (-20 * -0.2x + x * -0.2x)
y = (4x + -0.2x2)

Solving
y = 4x + -0.2x2

Solving for variable 'y'.

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

Simplifying
y = 4x + -0.2x2

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