2x^2-6x=140

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Solution for 2x^2-6x=140 equation:


Simplifying
2x2 + -6x = 140

Reorder the terms:
-6x + 2x2 = 140

Solving
-6x + 2x2 = 140

Solving for variable 'x'.

Reorder the terms:
-140 + -6x + 2x2 = 140 + -140

Combine like terms: 140 + -140 = 0
-140 + -6x + 2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-70 + -3x + x2) = 0

Factor a trinomial.
2((-7 + -1x)(10 + -1x)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-7 + -1x)' equal to zero and attempt to solve: Simplifying -7 + -1x = 0 Solving -7 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + -1x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -1x = 0 + 7 -1x = 0 + 7 Combine like terms: 0 + 7 = 7 -1x = 7 Divide each side by '-1'. x = -7 Simplifying x = -7

Subproblem 2

Set the factor '(10 + -1x)' equal to zero and attempt to solve: Simplifying 10 + -1x = 0 Solving 10 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + -1x = 0 + -10 Combine like terms: 10 + -10 = 0 0 + -1x = 0 + -10 -1x = 0 + -10 Combine like terms: 0 + -10 = -10 -1x = -10 Divide each side by '-1'. x = 10 Simplifying x = 10

Solution

x = {-7, 10}

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