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Simplifying 2x(x + 3) + 4 = 12 Reorder the terms: 2x(3 + x) + 4 = 12 (3 * 2x + x * 2x) + 4 = 12 (6x + 2x2) + 4 = 12 Reorder the terms: 4 + 6x + 2x2 = 12 Solving 4 + 6x + 2x2 = 12 Solving for variable 'x'. Reorder the terms: 4 + -12 + 6x + 2x2 = 12 + -12 Combine like terms: 4 + -12 = -8 -8 + 6x + 2x2 = 12 + -12 Combine like terms: 12 + -12 = 0 -8 + 6x + 2x2 = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(-4 + 3x + x2) = 0 Factor a trinomial. 2((-4 + -1x)(1 + -1x)) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(-4 + -1x)' equal to zero and attempt to solve: Simplifying -4 + -1x = 0 Solving -4 + -1x = 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 + -1x = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -1x = 0 + 4 -1x = 0 + 4 Combine like terms: 0 + 4 = 4 -1x = 4 Divide each side by '-1'. x = -4 Simplifying x = -4Subproblem 2
Set the factor '(1 + -1x)' equal to zero and attempt to solve: Simplifying 1 + -1x = 0 Solving 1 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -1x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -1x = 0 + -1 -1x = 0 + -1 Combine like terms: 0 + -1 = -1 -1x = -1 Divide each side by '-1'. x = 1 Simplifying x = 1Solution
x = {-4, 1}
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