3(x^2-20)-31x=0

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Solution for 3(x^2-20)-31x=0 equation:


Simplifying
3(x2 + -20) + -31x = 0

Reorder the terms:
3(-20 + x2) + -31x = 0
(-20 * 3 + x2 * 3) + -31x = 0
(-60 + 3x2) + -31x = 0

Reorder the terms:
-60 + -31x + 3x2 = 0

Solving
-60 + -31x + 3x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-5 + -3x)(12 + -1x) = 0

Subproblem 1

Set the factor '(-5 + -3x)' equal to zero and attempt to solve: Simplifying -5 + -3x = 0 Solving -5 + -3x = 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 + -3x = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -3x = 0 + 5 -3x = 0 + 5 Combine like terms: 0 + 5 = 5 -3x = 5 Divide each side by '-3'. x = -1.666666667 Simplifying x = -1.666666667

Subproblem 2

Set the factor '(12 + -1x)' equal to zero and attempt to solve: Simplifying 12 + -1x = 0 Solving 12 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + -1x = 0 + -12 Combine like terms: 12 + -12 = 0 0 + -1x = 0 + -12 -1x = 0 + -12 Combine like terms: 0 + -12 = -12 -1x = -12 Divide each side by '-1'. x = 12 Simplifying x = 12

Solution

x = {-1.666666667, 12}

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