y=3x+x(x-1)

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Solution for y=3x+x(x-1) equation: 


Simplifying
y = 3x + x(x + -1)

Reorder the terms:
y = 3x + x(-1 + x)
y = 3x + (-1 * x + x * x)
y = 3x + (-1x + x2)

Combine like terms: 3x + -1x = 2x
y = 2x + x2

Solving
y = 2x + x2

Solving for variable 'y'.

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

Simplifying
y = 2x + x2

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