0=9x^2+3x-20

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Solution for 0=9x^2+3x-20 equation:


Simplifying
0 = 9x2 + 3x + -20

Reorder the terms:
0 = -20 + 3x + 9x2

Solving
0 = -20 + 3x + 9x2

Solving for variable 'x'.

Combine like terms: 0 + 20 = 20
20 + -3x + -9x2 = -20 + 3x + 9x2 + 20 + -3x + -9x2

Reorder the terms:
20 + -3x + -9x2 = -20 + 20 + 3x + -3x + 9x2 + -9x2

Combine like terms: -20 + 20 = 0
20 + -3x + -9x2 = 0 + 3x + -3x + 9x2 + -9x2
20 + -3x + -9x2 = 3x + -3x + 9x2 + -9x2

Combine like terms: 3x + -3x = 0
20 + -3x + -9x2 = 0 + 9x2 + -9x2
20 + -3x + -9x2 = 9x2 + -9x2

Combine like terms: 9x2 + -9x2 = 0
20 + -3x + -9x2 = 0

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

Subproblem 1

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

Subproblem 2

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

Solution

x = {1.333333333, -1.666666667}

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