3x^2-4x=84

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Solution for 3x^2-4x=84 equation:


Simplifying
3x2 + -4x = 84

Reorder the terms:
-4x + 3x2 = 84

Solving
-4x + 3x2 = 84

Solving for variable 'x'.

Reorder the terms:
-84 + -4x + 3x2 = 84 + -84

Combine like terms: 84 + -84 = 0
-84 + -4x + 3x2 = 0

Factor a trinomial.
(-14 + -3x)(6 + -1x) = 0

Subproblem 1

Set the factor '(-14 + -3x)' equal to zero and attempt to solve: Simplifying -14 + -3x = 0 Solving -14 + -3x = 0 Move all terms containing x to the left, all other terms to the right. Add '14' to each side of the equation. -14 + 14 + -3x = 0 + 14 Combine like terms: -14 + 14 = 0 0 + -3x = 0 + 14 -3x = 0 + 14 Combine like terms: 0 + 14 = 14 -3x = 14 Divide each side by '-3'. x = -4.666666667 Simplifying x = -4.666666667

Subproblem 2

Set the factor '(6 + -1x)' equal to zero and attempt to solve: Simplifying 6 + -1x = 0 Solving 6 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + -1x = 0 + -6 Combine like terms: 6 + -6 = 0 0 + -1x = 0 + -6 -1x = 0 + -6 Combine like terms: 0 + -6 = -6 -1x = -6 Divide each side by '-1'. x = 6 Simplifying x = 6

Solution

x = {-4.666666667, 6}

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