y=2(x+-4)(x+5)

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Solution for y=2(x+-4)(x+5) equation: 


Simplifying
y = 2(x + -4)(x + 5)

Reorder the terms:
y = 2(-4 + x)(x + 5)

Reorder the terms:
y = 2(-4 + x)(5 + x)

Multiply (-4 + x) * (5 + x)
y = 2(-4(5 + x) + x(5 + x))
y = 2((5 * -4 + x * -4) + x(5 + x))
y = 2((-20 + -4x) + x(5 + x))
y = 2(-20 + -4x + (5 * x + x * x))
y = 2(-20 + -4x + (5x + x2))

Combine like terms: -4x + 5x = 1x
y = 2(-20 + 1x + x2)
y = (-20 * 2 + 1x * 2 + x2 * 2)
y = (-40 + 2x + 2x2)

Solving
y = -40 + 2x + 2x2

Solving for variable 'y'.

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

Simplifying
y = -40 + 2x + 2x2

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