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

Subproblem 1

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

Subproblem 2

Set the factor '(5 + x)' equal to zero and attempt to solve: Simplifying 5 + x = 0 Solving 5 + x = 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 + x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + x = 0 + -5 x = 0 + -5 Combine like terms: 0 + -5 = -5 x = -5 Simplifying x = -5

Solution

x = {1.5, -5}

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