0=x^2+5x-126

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Solution for 0=x^2+5x-126 equation:


Simplifying
0 = x2 + 5x + -126

Reorder the terms:
0 = -126 + 5x + x2

Solving
0 = -126 + 5x + x2

Solving for variable 'x'.

Combine like terms: 0 + 126 = 126
126 + -5x + -1x2 = -126 + 5x + x2 + 126 + -5x + -1x2

Reorder the terms:
126 + -5x + -1x2 = -126 + 126 + 5x + -5x + x2 + -1x2

Combine like terms: -126 + 126 = 0
126 + -5x + -1x2 = 0 + 5x + -5x + x2 + -1x2
126 + -5x + -1x2 = 5x + -5x + x2 + -1x2

Combine like terms: 5x + -5x = 0
126 + -5x + -1x2 = 0 + x2 + -1x2
126 + -5x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
126 + -5x + -1x2 = 0

Factor a trinomial.
(9 + -1x)(14 + x) = 0

Subproblem 1

Set the factor '(9 + -1x)' equal to zero and attempt to solve: Simplifying 9 + -1x = 0 Solving 9 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -1x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1x = 0 + -9 -1x = 0 + -9 Combine like terms: 0 + -9 = -9 -1x = -9 Divide each side by '-1'. x = 9 Simplifying x = 9

Subproblem 2

Set the factor '(14 + x)' equal to zero and attempt to solve: Simplifying 14 + x = 0 Solving 14 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-14' to each side of the equation. 14 + -14 + x = 0 + -14 Combine like terms: 14 + -14 = 0 0 + x = 0 + -14 x = 0 + -14 Combine like terms: 0 + -14 = -14 x = -14 Simplifying x = -14

Solution

x = {9, -14}

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