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Simplifying 42x4 + 35x2 = 28 Reorder the terms: 35x2 + 42x4 = 28 Solving 35x2 + 42x4 = 28 Solving for variable 'x'. Reorder the terms: -28 + 35x2 + 42x4 = 28 + -28 Combine like terms: 28 + -28 = 0 -28 + 35x2 + 42x4 = 0 Factor out the Greatest Common Factor (GCF), '7'. 7(-4 + 5x2 + 6x4) = 0 Factor a trinomial. 7((-4 + -3x2)(1 + -2x2)) = 0 Ignore the factor 7.Subproblem 1
Set the factor '(-4 + -3x2)' equal to zero and attempt to solve: Simplifying -4 + -3x2 = 0 Solving -4 + -3x2 = 0 Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + -3x2 = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -3x2 = 0 + 4 -3x2 = 0 + 4 Combine like terms: 0 + 4 = 4 -3x2 = 4 Divide each side by '-3'. x2 = -1.333333333 Simplifying x2 = -1.333333333 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 '(1 + -2x2)' equal to zero and attempt to solve: Simplifying 1 + -2x2 = 0 Solving 1 + -2x2 = 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 + -2x2 = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -2x2 = 0 + -1 -2x2 = 0 + -1 Combine like terms: 0 + -1 = -1 -2x2 = -1 Divide each side by '-2'. x2 = 0.5 Simplifying x2 = 0.5 Take the square root of each side: x = {-0.707106781, 0.707106781}Solution
x = {-0.707106781, 0.707106781}
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