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

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


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

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

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

Multiply (3 + 7x) * (-3 + x)
y = (3(-3 + x) + 7x * (-3 + x))
y = ((-3 * 3 + x * 3) + 7x * (-3 + x))
y = ((-9 + 3x) + 7x * (-3 + x))
y = (-9 + 3x + (-3 * 7x + x * 7x))
y = (-9 + 3x + (-21x + 7x2))

Combine like terms: 3x + -21x = -18x
y = (-9 + -18x + 7x2)

Solving
y = -9 + -18x + 7x2

Solving for variable 'y'.

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

Simplifying
y = -9 + -18x + 7x2

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