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Simplifying 210x2 + -1680x + 7700 = 11900 Reorder the terms: 7700 + -1680x + 210x2 = 11900 Solving 7700 + -1680x + 210x2 = 11900 Solving for variable 'x'. Reorder the terms: 7700 + -11900 + -1680x + 210x2 = 11900 + -11900 Combine like terms: 7700 + -11900 = -4200 -4200 + -1680x + 210x2 = 11900 + -11900 Combine like terms: 11900 + -11900 = 0 -4200 + -1680x + 210x2 = 0 Factor out the Greatest Common Factor (GCF), '210'. 210(-20 + -8x + x2) = 0 Factor a trinomial. 210((-2 + -1x)(10 + -1x)) = 0 Ignore the factor 210.Subproblem 1
Set the factor '(-2 + -1x)' equal to zero and attempt to solve: Simplifying -2 + -1x = 0 Solving -2 + -1x = 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 + -1x = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1x = 0 + 2 -1x = 0 + 2 Combine like terms: 0 + 2 = 2 -1x = 2 Divide each side by '-1'. x = -2 Simplifying x = -2Subproblem 2
Set the factor '(10 + -1x)' equal to zero and attempt to solve: Simplifying 10 + -1x = 0 Solving 10 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + -1x = 0 + -10 Combine like terms: 10 + -10 = 0 0 + -1x = 0 + -10 -1x = 0 + -10 Combine like terms: 0 + -10 = -10 -1x = -10 Divide each side by '-1'. x = 10 Simplifying x = 10Solution
x = {-2, 10}
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