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Simplifying 63a2 + -21a4 = 0 Solving 63a2 + -21a4 = 0 Solving for variable 'a'. Factor out the Greatest Common Factor (GCF), '21a2'. 21a2(3 + -1a2) = 0 Ignore the factor 21.Subproblem 1
Set the factor 'a2' equal to zero and attempt to solve: Simplifying a2 = 0 Solving a2 = 0 Move all terms containing a to the left, all other terms to the right. Simplifying a2 = 0 Take the square root of each side: a = {0}Subproblem 2
Set the factor '(3 + -1a2)' equal to zero and attempt to solve: Simplifying 3 + -1a2 = 0 Solving 3 + -1a2 = 0 Move all terms containing a to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1a2 = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1a2 = 0 + -3 -1a2 = 0 + -3 Combine like terms: 0 + -3 = -3 -1a2 = -3 Divide each side by '-1'. a2 = 3 Simplifying a2 = 3 Take the square root of each side: a = {-1.732050808, 1.732050808}Solution
a = {0, -1.732050808, 1.732050808}
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