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Simplifying 4x2 + -4x + -228 = -4 Reorder the terms: -228 + -4x + 4x2 = -4 Solving -228 + -4x + 4x2 = -4 Solving for variable 'x'. Reorder the terms: -228 + 4 + -4x + 4x2 = -4 + 4 Combine like terms: -228 + 4 = -224 -224 + -4x + 4x2 = -4 + 4 Combine like terms: -4 + 4 = 0 -224 + -4x + 4x2 = 0 Factor out the Greatest Common Factor (GCF), '4'. 4(-56 + -1x + x2) = 0 Factor a trinomial. 4((-7 + -1x)(8 + -1x)) = 0 Ignore the factor 4.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 = -7Subproblem 2
Set the factor '(8 + -1x)' equal to zero and attempt to solve: Simplifying 8 + -1x = 0 Solving 8 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -1x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -1x = 0 + -8 -1x = 0 + -8 Combine like terms: 0 + -8 = -8 -1x = -8 Divide each side by '-1'. x = 8 Simplifying x = 8Solution
x = {-7, 8}
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