5x^2-2=9x

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Solution for 5x^2-2=9x equation:


Simplifying
5x2 + -2 = 9x

Reorder the terms:
-2 + 5x2 = 9x

Solving
-2 + 5x2 = 9x

Solving for variable 'x'.

Reorder the terms:
-2 + -9x + 5x2 = 9x + -9x

Combine like terms: 9x + -9x = 0
-2 + -9x + 5x2 = 0

Factor a trinomial.
(-1 + -5x)(2 + -1x) = 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 + -1x)' equal to zero and attempt to solve: Simplifying 2 + -1x = 0 Solving 2 + -1x = 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 + -1x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x = 0 + -2 -1x = 0 + -2 Combine like terms: 0 + -2 = -2 -1x = -2 Divide each side by '-1'. x = 2 Simplifying x = 2

Solution

x = {-0.2, 2}

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