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Simplifying 7x2 + 42 = -35x Reorder the terms: 42 + 7x2 = -35x Solving 42 + 7x2 = -35x Solving for variable 'x'. Reorder the terms: 42 + 35x + 7x2 = -35x + 35x Combine like terms: -35x + 35x = 0 42 + 35x + 7x2 = 0 Factor out the Greatest Common Factor (GCF), '7'. 7(6 + 5x + x2) = 0 Factor a trinomial. 7((3 + x)(2 + x)) = 0 Ignore the factor 7.Subproblem 1
Set the factor '(3 + x)' equal to zero and attempt to solve: Simplifying 3 + x = 0 Solving 3 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + x = 0 + -3 x = 0 + -3 Combine like terms: 0 + -3 = -3 x = -3 Simplifying x = -3Subproblem 2
Set the factor '(2 + x)' equal to zero and attempt to solve: Simplifying 2 + x = 0 Solving 2 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + x = 0 + -2 x = 0 + -2 Combine like terms: 0 + -2 = -2 x = -2 Simplifying x = -2Solution
x = {-3, -2}
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