9x^2-30=39x

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Solution for 9x^2-30=39x equation:


Simplifying
9x2 + -30 = 39x

Reorder the terms:
-30 + 9x2 = 39x

Solving
-30 + 9x2 = 39x

Solving for variable 'x'.

Reorder the terms:
-30 + -39x + 9x2 = 39x + -39x

Combine like terms: 39x + -39x = 0
-30 + -39x + 9x2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-10 + -13x + 3x2) = 0

Factor a trinomial.
3((-2 + -3x)(5 + -1x)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-2 + -3x)' equal to zero and attempt to solve: Simplifying -2 + -3x = 0 Solving -2 + -3x = 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 + -3x = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -3x = 0 + 2 -3x = 0 + 2 Combine like terms: 0 + 2 = 2 -3x = 2 Divide each side by '-3'. x = -0.6666666667 Simplifying x = -0.6666666667

Subproblem 2

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

Solution

x = {-0.6666666667, 5}

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