(5x-1)(9x+8)=0

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Solution for (5x-1)(9x+8)=0 equation:


Simplifying
(5x + -1)(9x + 8) = 0

Reorder the terms:
(-1 + 5x)(9x + 8) = 0

Reorder the terms:
(-1 + 5x)(8 + 9x) = 0

Multiply (-1 + 5x) * (8 + 9x)
(-1(8 + 9x) + 5x * (8 + 9x)) = 0
((8 * -1 + 9x * -1) + 5x * (8 + 9x)) = 0
((-8 + -9x) + 5x * (8 + 9x)) = 0
(-8 + -9x + (8 * 5x + 9x * 5x)) = 0
(-8 + -9x + (40x + 45x2)) = 0

Combine like terms: -9x + 40x = 31x
(-8 + 31x + 45x2) = 0

Solving
-8 + 31x + 45x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-8 + -9x)(1 + -5x) = 0

Subproblem 1

Set the factor '(-8 + -9x)' equal to zero and attempt to solve: Simplifying -8 + -9x = 0 Solving -8 + -9x = 0 Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + -9x = 0 + 8 Combine like terms: -8 + 8 = 0 0 + -9x = 0 + 8 -9x = 0 + 8 Combine like terms: 0 + 8 = 8 -9x = 8 Divide each side by '-9'. x = -0.8888888889 Simplifying x = -0.8888888889

Subproblem 2

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

Solution

x = {-0.8888888889, 0.2}

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