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

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

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

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

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

Multiply (-1 + x) * (3 + x)
y = x(-1(3 + x) + x(3 + x))
y = x((3 * -1 + x * -1) + x(3 + x))
y = x((-3 + -1x) + x(3 + x))
y = x(-3 + -1x + (3 * x + x * x))
y = x(-3 + -1x + (3x + x2))

Combine like terms: -1x + 3x = 2x
y = x(-3 + 2x + x2)
y = (-3 * x + 2x * x + x2 * x)
y = (-3x + 2x2 + x3)

Solving
y = -3x + 2x2 + x3

Solving for variable 'y'.

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

Simplifying
y = -3x + 2x2 + x3