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Simplifying 4z3 + 25z = 20z2 Reorder the terms: 25z + 4z3 = 20z2 Solving 25z + 4z3 = 20z2 Solving for variable 'z'. Reorder the terms: 25z + -20z2 + 4z3 = 20z2 + -20z2 Combine like terms: 20z2 + -20z2 = 0 25z + -20z2 + 4z3 = 0 Factor out the Greatest Common Factor (GCF), 'z'. z(25 + -20z + 4z2) = 0 Factor a trinomial. z((5 + -2z)(5 + -2z)) = 0Subproblem 1
Set the factor 'z' equal to zero and attempt to solve: Simplifying z = 0 Solving z = 0 Move all terms containing z to the left, all other terms to the right. Simplifying z = 0Subproblem 2
Set the factor '(5 + -2z)' equal to zero and attempt to solve: Simplifying 5 + -2z = 0 Solving 5 + -2z = 0 Move all terms containing z to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -2z = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -2z = 0 + -5 -2z = 0 + -5 Combine like terms: 0 + -5 = -5 -2z = -5 Divide each side by '-2'. z = 2.5 Simplifying z = 2.5Subproblem 3
Set the factor '(5 + -2z)' equal to zero and attempt to solve: Simplifying 5 + -2z = 0 Solving 5 + -2z = 0 Move all terms containing z to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -2z = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -2z = 0 + -5 -2z = 0 + -5 Combine like terms: 0 + -5 = -5 -2z = -5 Divide each side by '-2'. z = 2.5 Simplifying z = 2.5Solution
z = {0, 2.5, 2.5}
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