y=(x-3)(x-7)

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Solution for y=(x-3)(x-7) equation: 


Simplifying
y = (x + -3)(x + -7)

Reorder the terms:
y = (-3 + x)(x + -7)

Reorder the terms:
y = (-3 + x)(-7 + x)

Multiply (-3 + x) * (-7 + x)
y = (-3(-7 + x) + x(-7 + x))
y = ((-7 * -3 + x * -3) + x(-7 + x))
y = ((21 + -3x) + x(-7 + x))
y = (21 + -3x + (-7 * x + x * x))
y = (21 + -3x + (-7x + x2))

Combine like terms: -3x + -7x = -10x
y = (21 + -10x + x2)

Solving
y = 21 + -10x + x2

Solving for variable 'y'.

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

Simplifying
y = 21 + -10x + x2

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