y=3x(x-1)-(3x+7)

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Solution for y=3x(x-1)-(3x+7) equation:


Simplifying
y = 3x(x + -1) + -1(3x + 7)

Reorder the terms:
y = 3x(-1 + x) + -1(3x + 7)
y = (-1 * 3x + x * 3x) + -1(3x + 7)
y = (-3x + 3x2) + -1(3x + 7)

Reorder the terms:
y = -3x + 3x2 + -1(7 + 3x)
y = -3x + 3x2 + (7 * -1 + 3x * -1)
y = -3x + 3x2 + (-7 + -3x)

Reorder the terms:
y = -7 + -3x + -3x + 3x2

Combine like terms: -3x + -3x = -6x
y = -7 + -6x + 3x2

Solving
y = -7 + -6x + 3x2

Solving for variable 'y'.

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

Simplifying
y = -7 + -6x + 3x2

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