=(3x-2)(5x+10)

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Solution for =(3x-2)(5x+10) equation:


Simplifying
0 = (3x + -2)(5x + 10)

Reorder the terms:
0 = (-2 + 3x)(5x + 10)

Reorder the terms:
0 = (-2 + 3x)(10 + 5x)

Multiply (-2 + 3x) * (10 + 5x)
0 = (-2(10 + 5x) + 3x * (10 + 5x))
0 = ((10 * -2 + 5x * -2) + 3x * (10 + 5x))
0 = ((-20 + -10x) + 3x * (10 + 5x))
0 = (-20 + -10x + (10 * 3x + 5x * 3x))
0 = (-20 + -10x + (30x + 15x2))

Combine like terms: -10x + 30x = 20x
0 = (-20 + 20x + 15x2)

Solving
0 = -20 + 20x + 15x2

Solving for variable 'x'.

Combine like terms: 0 + 20 = 20
20 + -20x + -15x2 = -20 + 20x + 15x2 + 20 + -20x + -15x2

Reorder the terms:
20 + -20x + -15x2 = -20 + 20 + 20x + -20x + 15x2 + -15x2

Combine like terms: -20 + 20 = 0
20 + -20x + -15x2 = 0 + 20x + -20x + 15x2 + -15x2
20 + -20x + -15x2 = 20x + -20x + 15x2 + -15x2

Combine like terms: 20x + -20x = 0
20 + -20x + -15x2 = 0 + 15x2 + -15x2
20 + -20x + -15x2 = 15x2 + -15x2

Combine like terms: 15x2 + -15x2 = 0
20 + -20x + -15x2 = 0

Factor out the Greatest Common Factor (GCF), '5'.
5(4 + -4x + -3x2) = 0

Factor a trinomial.
5((2 + -3x)(2 + x)) = 0

Ignore the factor 5.

Subproblem 1

Set the factor '(2 + -3x)' equal to zero and attempt to solve: Simplifying 2 + -3x = 0 Solving 2 + -3x = 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 + -3x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -3x = 0 + -2 -3x = 0 + -2 Combine like terms: 0 + -2 = -2 -3x = -2 Divide each side by '-3'. x = 0.6666666667 Simplifying x = 0.6666666667

Subproblem 2

Set the factor '(2 + x)' equal to zero and attempt to solve: Simplifying 2 + x = 0 Solving 2 + x = 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 + x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + x = 0 + -2 x = 0 + -2 Combine like terms: 0 + -2 = -2 x = -2 Simplifying x = -2

Solution

x = {0.6666666667, -2}

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