15x^2=20-20x

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Solution for 15x^2=20-20x equation:


Simplifying
15x2 = 20 + -20x

Solving
15x2 = 20 + -20x

Solving for variable 'x'.

Reorder the terms:
-20 + 20x + 15x2 = 20 + -20x + -20 + 20x

Reorder the terms:
-20 + 20x + 15x2 = 20 + -20 + -20x + 20x

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

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

Factor out the Greatest Common Factor (GCF), '5'.
5(-4 + 4x + 3x2) = 0

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

Ignore the factor 5.

Subproblem 1

Set the factor '(-2 + -1x)' equal to zero and attempt to solve: Simplifying -2 + -1x = 0 Solving -2 + -1x = 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 + -1x = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1x = 0 + 2 -1x = 0 + 2 Combine like terms: 0 + 2 = 2 -1x = 2 Divide each side by '-1'. x = -2 Simplifying x = -2

Subproblem 2

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

Solution

x = {-2, 0.6666666667}

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