y=x(x+a)(x-b)

Solution for y=x(x+a)(x-b) equation:

Simplifying
y = x(x + a)(x + -1b)

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

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

Multiply (a + x) * (-1b + x)
y = x(a(-1b + x) + x(-1b + x))
y = x((-1b * a + x * a) + x(-1b + x))
y = x((-1ab + ax) + x(-1b + x))
y = x(-1ab + ax + (-1b * x + x * x))
y = x(-1ab + ax + (-1bx + x2))
y = x(-1ab + ax + -1bx + x2)
y = (-1ab * x + ax * x + -1bx * x + x2 * x)
y = (-1abx + ax2 + -1bx2 + x3)

Solving
y = -1abx + ax2 + -1bx2 + x3

Solving for variable 'y'.

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

Simplifying
y = -1abx + ax2 + -1bx2 + x3