12x^2+15x-16x-20=0

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Solution for 12x^2+15x-16x-20=0 equation:


Simplifying
12x2 + 15x + -16x + -20 = 0

Reorder the terms:
-20 + 15x + -16x + 12x2 = 0

Combine like terms: 15x + -16x = -1x
-20 + -1x + 12x2 = 0

Solving
-20 + -1x + 12x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-5 + -4x)(4 + -3x) = 0

Subproblem 1

Set the factor '(-5 + -4x)' equal to zero and attempt to solve: Simplifying -5 + -4x = 0 Solving -5 + -4x = 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 + -4x = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -4x = 0 + 5 -4x = 0 + 5 Combine like terms: 0 + 5 = 5 -4x = 5 Divide each side by '-4'. x = -1.25 Simplifying x = -1.25

Subproblem 2

Set the factor '(4 + -3x)' equal to zero and attempt to solve: Simplifying 4 + -3x = 0 Solving 4 + -3x = 0 Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -3x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -3x = 0 + -4 -3x = 0 + -4 Combine like terms: 0 + -4 = -4 -3x = -4 Divide each side by '-3'. x = 1.333333333 Simplifying x = 1.333333333

Solution

x = {-1.25, 1.333333333}

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