6x^2+21x-80=-2x^2-3x

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Solution for 6x^2+21x-80=-2x^2-3x equation:


Simplifying
6x2 + 21x + -80 = -2x2 + -3x

Reorder the terms:
-80 + 21x + 6x2 = -2x2 + -3x

Reorder the terms:
-80 + 21x + 6x2 = -3x + -2x2

Solving
-80 + 21x + 6x2 = -3x + -2x2

Solving for variable 'x'.

Reorder the terms:
-80 + 21x + 3x + 6x2 + 2x2 = -3x + -2x2 + 3x + 2x2

Combine like terms: 21x + 3x = 24x
-80 + 24x + 6x2 + 2x2 = -3x + -2x2 + 3x + 2x2

Combine like terms: 6x2 + 2x2 = 8x2
-80 + 24x + 8x2 = -3x + -2x2 + 3x + 2x2

Reorder the terms:
-80 + 24x + 8x2 = -3x + 3x + -2x2 + 2x2

Combine like terms: -3x + 3x = 0
-80 + 24x + 8x2 = 0 + -2x2 + 2x2
-80 + 24x + 8x2 = -2x2 + 2x2

Combine like terms: -2x2 + 2x2 = 0
-80 + 24x + 8x2 = 0

Factor out the Greatest Common Factor (GCF), '8'.
8(-10 + 3x + x2) = 0

Factor a trinomial.
8((-5 + -1x)(2 + -1x)) = 0

Ignore the factor 8.

Subproblem 1

Set the factor '(-5 + -1x)' equal to zero and attempt to solve: Simplifying -5 + -1x = 0 Solving -5 + -1x = 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 + -1x = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -1x = 0 + 5 -1x = 0 + 5 Combine like terms: 0 + 5 = 5 -1x = 5 Divide each side by '-1'. x = -5 Simplifying x = -5

Subproblem 2

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

Solution

x = {-5, 2}

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