y=-1.8(x+12)(x+6)

Solution for y=-1.8(x+12)(x+6) equation:

Simplifying
y = -1.8(x + 12)(x + 6)

Reorder the terms:
y = -1.8(12 + x)(x + 6)

Reorder the terms:
y = -1.8(12 + x)(6 + x)

Multiply (12 + x) * (6 + x)
y = -1.8(12(6 + x) + x(6 + x))
y = -1.8((6 * 12 + x * 12) + x(6 + x))
y = -1.8((72 + 12x) + x(6 + x))
y = -1.8(72 + 12x + (6 * x + x * x))
y = -1.8(72 + 12x + (6x + x2))

Combine like terms: 12x + 6x = 18x
y = -1.8(72 + 18x + x2)
y = (72 * -1.8 + 18x * -1.8 + x2 * -1.8)
y = (-129.6 + -32.4x + -1.8x2)

Solving
y = -129.6 + -32.4x + -1.8x2

Solving for variable 'y'.

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

Simplifying
y = -129.6 + -32.4x + -1.8x2