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Simplifying 100x4 = -400x3 + 2100x2 Reorder the terms: 100x4 = 2100x2 + -400x3 Solving 100x4 = 2100x2 + -400x3 Solving for variable 'x'. Reorder the terms: -2100x2 + 400x3 + 100x4 = 2100x2 + -400x3 + -2100x2 + 400x3 Reorder the terms: -2100x2 + 400x3 + 100x4 = 2100x2 + -2100x2 + -400x3 + 400x3 Combine like terms: 2100x2 + -2100x2 = 0 -2100x2 + 400x3 + 100x4 = 0 + -400x3 + 400x3 -2100x2 + 400x3 + 100x4 = -400x3 + 400x3 Combine like terms: -400x3 + 400x3 = 0 -2100x2 + 400x3 + 100x4 = 0 Factor out the Greatest Common Factor (GCF), '100x2'. 100x2(-21 + 4x + x2) = 0 Factor a trinomial. 100x2((-7 + -1x)(3 + -1x)) = 0 Ignore the factor 100.Subproblem 1
Set the factor 'x2' equal to zero and attempt to solve: Simplifying x2 = 0 Solving x2 = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x2 = 0 Take the square root of each side: x = {0}Subproblem 2
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 3
Set the factor '(3 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 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 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3Solution
x = {0, -7, 3}
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