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

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


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

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

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

Multiply (-2 + 9x) * (1 + 5x)
(-2(1 + 5x) + 9x * (1 + 5x)) = 0
((1 * -2 + 5x * -2) + 9x * (1 + 5x)) = 0
((-2 + -10x) + 9x * (1 + 5x)) = 0
(-2 + -10x + (1 * 9x + 5x * 9x)) = 0
(-2 + -10x + (9x + 45x2)) = 0

Combine like terms: -10x + 9x = -1x
(-2 + -1x + 45x2) = 0

Solving
-2 + -1x + 45x2 = 0

Solving for variable 'x'.

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

Subproblem 1

Set the factor '(-1 + -5x)' equal to zero and attempt to solve: Simplifying -1 + -5x = 0 Solving -1 + -5x = 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 + -5x = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -5x = 0 + 1 -5x = 0 + 1 Combine like terms: 0 + 1 = 1 -5x = 1 Divide each side by '-5'. x = -0.2 Simplifying x = -0.2

Subproblem 2

Set the factor '(2 + -9x)' equal to zero and attempt to solve: Simplifying 2 + -9x = 0 Solving 2 + -9x = 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 + -9x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -9x = 0 + -2 -9x = 0 + -2 Combine like terms: 0 + -2 = -2 -9x = -2 Divide each side by '-9'. x = 0.2222222222 Simplifying x = 0.2222222222

Solution

x = {-0.2, 0.2222222222}

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