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Simplifying 8x4 + -42x2 = 0 Reorder the terms: -42x2 + 8x4 = 0 Solving -42x2 + 8x4 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '2x2'. 2x2(-21 + 4x2) = 0 Ignore the factor 2.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 '(-21 + 4x2)' equal to zero and attempt to solve: Simplifying -21 + 4x2 = 0 Solving -21 + 4x2 = 0 Move all terms containing x to the left, all other terms to the right. Add '21' to each side of the equation. -21 + 21 + 4x2 = 0 + 21 Combine like terms: -21 + 21 = 0 0 + 4x2 = 0 + 21 4x2 = 0 + 21 Combine like terms: 0 + 21 = 21 4x2 = 21 Divide each side by '4'. x2 = 5.25 Simplifying x2 = 5.25 Take the square root of each side: x = {-2.291287847, 2.291287847}Solution
x = {0, -2.291287847, 2.291287847}
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