y=(x-7)(x+13)

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Solution for y=(x-7)(x+13) equation: 


Simplifying
y = (x + -7)(x + 13)

Reorder the terms:
y = (-7 + x)(x + 13)

Reorder the terms:
y = (-7 + x)(13 + x)

Multiply (-7 + x) * (13 + x)
y = (-7(13 + x) + x(13 + x))
y = ((13 * -7 + x * -7) + x(13 + x))
y = ((-91 + -7x) + x(13 + x))
y = (-91 + -7x + (13 * x + x * x))
y = (-91 + -7x + (13x + x2))

Combine like terms: -7x + 13x = 6x
y = (-91 + 6x + x2)

Solving
y = -91 + 6x + x2

Solving for variable 'y'.

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

Simplifying
y = -91 + 6x + x2

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