0=12x^2-77x-20

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Solution for 0=12x^2-77x-20 equation:


Simplifying
0 = 12x2 + -77x + -20

Reorder the terms:
0 = -20 + -77x + 12x2

Solving
0 = -20 + -77x + 12x2

Solving for variable 'x'.

Combine like terms: 0 + 20 = 20
20 + 77x + -12x2 = -20 + -77x + 12x2 + 20 + 77x + -12x2

Reorder the terms:
20 + 77x + -12x2 = -20 + 20 + -77x + 77x + 12x2 + -12x2

Combine like terms: -20 + 20 = 0
20 + 77x + -12x2 = 0 + -77x + 77x + 12x2 + -12x2
20 + 77x + -12x2 = -77x + 77x + 12x2 + -12x2

Combine like terms: -77x + 77x = 0
20 + 77x + -12x2 = 0 + 12x2 + -12x2
20 + 77x + -12x2 = 12x2 + -12x2

Combine like terms: 12x2 + -12x2 = 0
20 + 77x + -12x2 = 0

Factor a trinomial.
(20 + -3x)(1 + 4x) = 0

Subproblem 1

Set the factor '(20 + -3x)' equal to zero and attempt to solve: Simplifying 20 + -3x = 0 Solving 20 + -3x = 0 Move all terms containing x to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + -3x = 0 + -20 Combine like terms: 20 + -20 = 0 0 + -3x = 0 + -20 -3x = 0 + -20 Combine like terms: 0 + -20 = -20 -3x = -20 Divide each side by '-3'. x = 6.666666667 Simplifying x = 6.666666667

Subproblem 2

Set the factor '(1 + 4x)' equal to zero and attempt to solve: Simplifying 1 + 4x = 0 Solving 1 + 4x = 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 + 4x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 4x = 0 + -1 4x = 0 + -1 Combine like terms: 0 + -1 = -1 4x = -1 Divide each side by '4'. x = -0.25 Simplifying x = -0.25

Solution

x = {6.666666667, -0.25}

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