3x^2=31x-80

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Solution for 3x^2=31x-80 equation:


Simplifying
3x2 = 31x + -80

Reorder the terms:
3x2 = -80 + 31x

Solving
3x2 = -80 + 31x

Solving for variable 'x'.

Reorder the terms:
80 + -31x + 3x2 = -80 + 31x + 80 + -31x

Reorder the terms:
80 + -31x + 3x2 = -80 + 80 + 31x + -31x

Combine like terms: -80 + 80 = 0
80 + -31x + 3x2 = 0 + 31x + -31x
80 + -31x + 3x2 = 31x + -31x

Combine like terms: 31x + -31x = 0
80 + -31x + 3x2 = 0

Factor a trinomial.
(5 + -1x)(16 + -3x) = 0

Subproblem 1

Set the factor '(5 + -1x)' equal to zero and attempt to solve: Simplifying 5 + -1x = 0 Solving 5 + -1x = 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 + -1x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1x = 0 + -5 -1x = 0 + -5 Combine like terms: 0 + -5 = -5 -1x = -5 Divide each side by '-1'. x = 5 Simplifying x = 5

Subproblem 2

Set the factor '(16 + -3x)' equal to zero and attempt to solve: Simplifying 16 + -3x = 0 Solving 16 + -3x = 0 Move all terms containing x to the left, all other terms to the right. Add '-16' to each side of the equation. 16 + -16 + -3x = 0 + -16 Combine like terms: 16 + -16 = 0 0 + -3x = 0 + -16 -3x = 0 + -16 Combine like terms: 0 + -16 = -16 -3x = -16 Divide each side by '-3'. x = 5.333333333 Simplifying x = 5.333333333

Solution

x = {5, 5.333333333}

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