9x^2+4x=5

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Solution for 9x^2+4x=5 equation:


Simplifying
9x2 + 4x = 5

Reorder the terms:
4x + 9x2 = 5

Solving
4x + 9x2 = 5

Solving for variable 'x'.

Reorder the terms:
-5 + 4x + 9x2 = 5 + -5

Combine like terms: 5 + -5 = 0
-5 + 4x + 9x2 = 0

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

Subproblem 1

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

Subproblem 2

Set the factor '(5 + -9x)' equal to zero and attempt to solve: Simplifying 5 + -9x = 0 Solving 5 + -9x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -9x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -9x = 0 + -5 -9x = 0 + -5 Combine like terms: 0 + -5 = -5 -9x = -5 Divide each side by '-9'. x = 0.5555555556 Simplifying x = 0.5555555556

Solution

x = {-1, 0.5555555556}

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