=(3x-6)(2x+7)

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Solution for =(3x-6)(2x+7) equation:


Simplifying
0 = (3x + -6)(2x + 7)

Reorder the terms:
0 = (-6 + 3x)(2x + 7)

Reorder the terms:
0 = (-6 + 3x)(7 + 2x)

Multiply (-6 + 3x) * (7 + 2x)
0 = (-6(7 + 2x) + 3x * (7 + 2x))
0 = ((7 * -6 + 2x * -6) + 3x * (7 + 2x))
0 = ((-42 + -12x) + 3x * (7 + 2x))
0 = (-42 + -12x + (7 * 3x + 2x * 3x))
0 = (-42 + -12x + (21x + 6x2))

Combine like terms: -12x + 21x = 9x
0 = (-42 + 9x + 6x2)

Solving
0 = -42 + 9x + 6x2

Solving for variable 'x'.

Combine like terms: 0 + 42 = 42
42 + -9x + -6x2 = -42 + 9x + 6x2 + 42 + -9x + -6x2

Reorder the terms:
42 + -9x + -6x2 = -42 + 42 + 9x + -9x + 6x2 + -6x2

Combine like terms: -42 + 42 = 0
42 + -9x + -6x2 = 0 + 9x + -9x + 6x2 + -6x2
42 + -9x + -6x2 = 9x + -9x + 6x2 + -6x2

Combine like terms: 9x + -9x = 0
42 + -9x + -6x2 = 0 + 6x2 + -6x2
42 + -9x + -6x2 = 6x2 + -6x2

Combine like terms: 6x2 + -6x2 = 0
42 + -9x + -6x2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(14 + -3x + -2x2) = 0

Factor a trinomial.
3((2 + -1x)(7 + 2x)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(2 + -1x)' equal to zero and attempt to solve: Simplifying 2 + -1x = 0 Solving 2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x = 0 + -2 -1x = 0 + -2 Combine like terms: 0 + -2 = -2 -1x = -2 Divide each side by '-1'. x = 2 Simplifying x = 2

Subproblem 2

Set the factor '(7 + 2x)' equal to zero and attempt to solve: Simplifying 7 + 2x = 0 Solving 7 + 2x = 0 Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + 2x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + 2x = 0 + -7 2x = 0 + -7 Combine like terms: 0 + -7 = -7 2x = -7 Divide each side by '2'. x = -3.5 Simplifying x = -3.5

Solution

x = {2, -3.5}

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