9x^2+31x-40=0

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Solution for 9x^2+31x-40=0 equation:


Simplifying
9x2 + 31x + -40 = 0

Reorder the terms:
-40 + 31x + 9x2 = 0

Solving
-40 + 31x + 9x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-40 + -9x)(1 + -1x) = 0

Subproblem 1

Set the factor '(-40 + -9x)' equal to zero and attempt to solve: Simplifying -40 + -9x = 0 Solving -40 + -9x = 0 Move all terms containing x to the left, all other terms to the right. Add '40' to each side of the equation. -40 + 40 + -9x = 0 + 40 Combine like terms: -40 + 40 = 0 0 + -9x = 0 + 40 -9x = 0 + 40 Combine like terms: 0 + 40 = 40 -9x = 40 Divide each side by '-9'. x = -4.444444444 Simplifying x = -4.444444444

Subproblem 2

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

Solution

x = {-4.444444444, 1}

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