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Simplifying -5x4 + 45x3 = 90x2 Reorder the terms: 45x3 + -5x4 = 90x2 Solving 45x3 + -5x4 = 90x2 Solving for variable 'x'. Reorder the terms: -90x2 + 45x3 + -5x4 = 90x2 + -90x2 Combine like terms: 90x2 + -90x2 = 0 -90x2 + 45x3 + -5x4 = 0 Factor out the Greatest Common Factor (GCF), '5x2'. 5x2(-18 + 9x + -1x2) = 0 Factor a trinomial. 5x2((-6 + x)(3 + -1x)) = 0 Ignore the factor 5.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 '(-6 + x)' equal to zero and attempt to solve: Simplifying -6 + x = 0 Solving -6 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + x = 0 + 6 Combine like terms: -6 + 6 = 0 0 + x = 0 + 6 x = 0 + 6 Combine like terms: 0 + 6 = 6 x = 6 Simplifying x = 6Subproblem 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, 6, 3}
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