0=6x^2-18x-168

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Solution for 0=6x^2-18x-168 equation:


Simplifying
0 = 6x2 + -18x + -168

Reorder the terms:
0 = -168 + -18x + 6x2

Solving
0 = -168 + -18x + 6x2

Solving for variable 'x'.

Combine like terms: 0 + 168 = 168
168 + 18x + -6x2 = -168 + -18x + 6x2 + 168 + 18x + -6x2

Reorder the terms:
168 + 18x + -6x2 = -168 + 168 + -18x + 18x + 6x2 + -6x2

Combine like terms: -168 + 168 = 0
168 + 18x + -6x2 = 0 + -18x + 18x + 6x2 + -6x2
168 + 18x + -6x2 = -18x + 18x + 6x2 + -6x2

Combine like terms: -18x + 18x = 0
168 + 18x + -6x2 = 0 + 6x2 + -6x2
168 + 18x + -6x2 = 6x2 + -6x2

Combine like terms: 6x2 + -6x2 = 0
168 + 18x + -6x2 = 0

Factor out the Greatest Common Factor (GCF), '6'.
6(28 + 3x + -1x2) = 0

Factor a trinomial.
6((7 + -1x)(4 + x)) = 0

Ignore the factor 6.

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 '(4 + x)' equal to zero and attempt to solve: Simplifying 4 + x = 0 Solving 4 + x = 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 + x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + x = 0 + -4 x = 0 + -4 Combine like terms: 0 + -4 = -4 x = -4 Simplifying x = -4

Solution

x = {7, -4}

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