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Simplifying (z2 + 5)(z2 + -3z + 4) = 0 Reorder the terms: (5 + z2)(z2 + -3z + 4) = 0 Reorder the terms: (5 + z2)(4 + -3z + z2) = 0 Multiply (5 + z2) * (4 + -3z + z2) (5(4 + -3z + z2) + z2(4 + -3z + z2)) = 0 ((4 * 5 + -3z * 5 + z2 * 5) + z2(4 + -3z + z2)) = 0 ((20 + -15z + 5z2) + z2(4 + -3z + z2)) = 0 (20 + -15z + 5z2 + (4 * z2 + -3z * z2 + z2 * z2)) = 0 (20 + -15z + 5z2 + (4z2 + -3z3 + z4)) = 0 Combine like terms: 5z2 + 4z2 = 9z2 (20 + -15z + 9z2 + -3z3 + z4) = 0 Solving 20 + -15z + 9z2 + -3z3 + z4 = 0 Solving for variable 'z'. The solution to this equation could not be determined.
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