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Simplifying X4 + -400 = 0 Reorder the terms: -400 + X4 = 0 Solving -400 + X4 = 0 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '400' to each side of the equation. -400 + 400 + X4 = 0 + 400 Combine like terms: -400 + 400 = 0 0 + X4 = 0 + 400 X4 = 0 + 400 Combine like terms: 0 + 400 = 400 X4 = 400 Simplifying X4 = 400 Reorder the terms: -400 + X4 = 400 + -400 Combine like terms: 400 + -400 = 0 -400 + X4 = 0 Factor a difference between two squares. (20 + X2)(-20 + X2) = 0Subproblem 1
Set the factor '(20 + X2)' equal to zero and attempt to solve: Simplifying 20 + X2 = 0 Solving 20 + X2 = 0 Move all terms containing X to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + X2 = 0 + -20 Combine like terms: 20 + -20 = 0 0 + X2 = 0 + -20 X2 = 0 + -20 Combine like terms: 0 + -20 = -20 X2 = -20 Simplifying X2 = -20 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined.Subproblem 2
Set the factor '(-20 + X2)' equal to zero and attempt to solve: Simplifying -20 + X2 = 0 Solving -20 + X2 = 0 Move all terms containing X to the left, all other terms to the right. Add '20' to each side of the equation. -20 + 20 + X2 = 0 + 20 Combine like terms: -20 + 20 = 0 0 + X2 = 0 + 20 X2 = 0 + 20 Combine like terms: 0 + 20 = 20 X2 = 20 Simplifying X2 = 20 Take the square root of each side: X = {-4.472135955, 4.472135955}Solution
X = {-4.472135955, 4.472135955}
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