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Simplifying 15x4 + -1(15x2) = 0 Remove parenthesis around (15x2) 15x4 + -1 * 15x2 = 0 Multiply -1 * 15 15x4 + -15x2 = 0 Reorder the terms: -15x2 + 15x4 = 0 Solving -15x2 + 15x4 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '15x2'. 15x2(-1 + x2) = 0 Factor a difference between two squares. 15x2((1 + x)(-1 + x)) = 0 Ignore the factor 15.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 '(1 + x)' equal to zero and attempt to solve: Simplifying 1 + x = 0 Solving 1 + x = 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 + x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + x = 0 + -1 x = 0 + -1 Combine like terms: 0 + -1 = -1 x = -1 Simplifying x = -1Subproblem 3
Set the factor '(-1 + x)' equal to zero and attempt to solve: Simplifying -1 + x = 0 Solving -1 + x = 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 + x = 0 + 1 Combine like terms: -1 + 1 = 0 0 + x = 0 + 1 x = 0 + 1 Combine like terms: 0 + 1 = 1 x = 1 Simplifying x = 1Solution
x = {0, -1, 1}
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