x(5x-2)-18(5x-2)=0

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Solution for x(5x-2)-18(5x-2)=0 equation:


Simplifying
x(5x + -2) + -18(5x + -2) = 0

Reorder the terms:
x(-2 + 5x) + -18(5x + -2) = 0
(-2 * x + 5x * x) + -18(5x + -2) = 0
(-2x + 5x2) + -18(5x + -2) = 0

Reorder the terms:
-2x + 5x2 + -18(-2 + 5x) = 0
-2x + 5x2 + (-2 * -18 + 5x * -18) = 0
-2x + 5x2 + (36 + -90x) = 0

Reorder the terms:
36 + -2x + -90x + 5x2 = 0

Combine like terms: -2x + -90x = -92x
36 + -92x + 5x2 = 0

Solving
36 + -92x + 5x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(2 + -5x)(18 + -1x) = 0

Subproblem 1

Set the factor '(2 + -5x)' equal to zero and attempt to solve: Simplifying 2 + -5x = 0 Solving 2 + -5x = 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 + -5x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -5x = 0 + -2 -5x = 0 + -2 Combine like terms: 0 + -2 = -2 -5x = -2 Divide each side by '-5'. x = 0.4 Simplifying x = 0.4

Subproblem 2

Set the factor '(18 + -1x)' equal to zero and attempt to solve: Simplifying 18 + -1x = 0 Solving 18 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-18' to each side of the equation. 18 + -18 + -1x = 0 + -18 Combine like terms: 18 + -18 = 0 0 + -1x = 0 + -18 -1x = 0 + -18 Combine like terms: 0 + -18 = -18 -1x = -18 Divide each side by '-1'. x = 18 Simplifying x = 18

Solution

x = {0.4, 18}

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