(2x-3)(x+5)=-18

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Solution for (2x-3)(x+5)=-18 equation:


Simplifying
(2x + -3)(x + 5) = -18

Reorder the terms:
(-3 + 2x)(x + 5) = -18

Reorder the terms:
(-3 + 2x)(5 + x) = -18

Multiply (-3 + 2x) * (5 + x)
(-3(5 + x) + 2x * (5 + x)) = -18
((5 * -3 + x * -3) + 2x * (5 + x)) = -18
((-15 + -3x) + 2x * (5 + x)) = -18
(-15 + -3x + (5 * 2x + x * 2x)) = -18
(-15 + -3x + (10x + 2x2)) = -18

Combine like terms: -3x + 10x = 7x
(-15 + 7x + 2x2) = -18

Solving
-15 + 7x + 2x2 = -18

Solving for variable 'x'.

Reorder the terms:
-15 + 18 + 7x + 2x2 = -18 + 18

Combine like terms: -15 + 18 = 3
3 + 7x + 2x2 = -18 + 18

Combine like terms: -18 + 18 = 0
3 + 7x + 2x2 = 0

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

Subproblem 1

Set the factor '(3 + x)' equal to zero and attempt to solve: Simplifying 3 + x = 0 Solving 3 + x = 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 + x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + x = 0 + -3 x = 0 + -3 Combine like terms: 0 + -3 = -3 x = -3 Simplifying x = -3

Subproblem 2

Set the factor '(1 + 2x)' equal to zero and attempt to solve: Simplifying 1 + 2x = 0 Solving 1 + 2x = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + 2x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 2x = 0 + -1 2x = 0 + -1 Combine like terms: 0 + -1 = -1 2x = -1 Divide each side by '2'. x = -0.5 Simplifying x = -0.5

Solution

x = {-3, -0.5}

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