(5x-9)(2x+1)=0

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Solution for (5x-9)(2x+1)=0 equation:


Simplifying
(5x + -9)(2x + 1) = 0

Reorder the terms:
(-9 + 5x)(2x + 1) = 0

Reorder the terms:
(-9 + 5x)(1 + 2x) = 0

Multiply (-9 + 5x) * (1 + 2x)
(-9(1 + 2x) + 5x * (1 + 2x)) = 0
((1 * -9 + 2x * -9) + 5x * (1 + 2x)) = 0
((-9 + -18x) + 5x * (1 + 2x)) = 0
(-9 + -18x + (1 * 5x + 2x * 5x)) = 0
(-9 + -18x + (5x + 10x2)) = 0

Combine like terms: -18x + 5x = -13x
(-9 + -13x + 10x2) = 0

Solving
-9 + -13x + 10x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-1 + -2x)(9 + -5x) = 0

Subproblem 1

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

Subproblem 2

Set the factor '(9 + -5x)' equal to zero and attempt to solve: Simplifying 9 + -5x = 0 Solving 9 + -5x = 0 Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -5x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -5x = 0 + -9 -5x = 0 + -9 Combine like terms: 0 + -9 = -9 -5x = -9 Divide each side by '-5'. x = 1.8 Simplifying x = 1.8

Solution

x = {-0.5, 1.8}

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