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

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Solution for 0=(2x+3)(x-5) equation:


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

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

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

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

Combine like terms: 3x + -10x = -7x
0 = (-15 + -7x + 2x2)

Solving
0 = -15 + -7x + 2x2

Solving for variable 'x'.

Combine like terms: 0 + 15 = 15
15 + 7x + -2x2 = -15 + -7x + 2x2 + 15 + 7x + -2x2

Reorder the terms:
15 + 7x + -2x2 = -15 + 15 + -7x + 7x + 2x2 + -2x2

Combine like terms: -15 + 15 = 0
15 + 7x + -2x2 = 0 + -7x + 7x + 2x2 + -2x2
15 + 7x + -2x2 = -7x + 7x + 2x2 + -2x2

Combine like terms: -7x + 7x = 0
15 + 7x + -2x2 = 0 + 2x2 + -2x2
15 + 7x + -2x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
15 + 7x + -2x2 = 0

Factor a trinomial.
(5 + -1x)(3 + 2x) = 0

Subproblem 1

Set the factor '(5 + -1x)' equal to zero and attempt to solve: Simplifying 5 + -1x = 0 Solving 5 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1x = 0 + -5 -1x = 0 + -5 Combine like terms: 0 + -5 = -5 -1x = -5 Divide each side by '-1'. x = 5 Simplifying x = 5

Subproblem 2

Set the factor '(3 + 2x)' equal to zero and attempt to solve: Simplifying 3 + 2x = 0 Solving 3 + 2x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + 2x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + 2x = 0 + -3 2x = 0 + -3 Combine like terms: 0 + -3 = -3 2x = -3 Divide each side by '2'. x = -1.5 Simplifying x = -1.5

Solution

x = {5, -1.5}

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