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Simplifying (z + -2z2 + 3)(5 + z) = 0 Reorder the terms: (3 + z + -2z2)(5 + z) = 0 Multiply (3 + z + -2z2) * (5 + z) (3(5 + z) + z(5 + z) + -2z2 * (5 + z)) = 0 ((5 * 3 + z * 3) + z(5 + z) + -2z2 * (5 + z)) = 0 ((15 + 3z) + z(5 + z) + -2z2 * (5 + z)) = 0 (15 + 3z + (5 * z + z * z) + -2z2 * (5 + z)) = 0 (15 + 3z + (5z + z2) + -2z2 * (5 + z)) = 0 (15 + 3z + 5z + z2 + (5 * -2z2 + z * -2z2)) = 0 (15 + 3z + 5z + z2 + (-10z2 + -2z3)) = 0 Combine like terms: 3z + 5z = 8z (15 + 8z + z2 + -10z2 + -2z3) = 0 Combine like terms: z2 + -10z2 = -9z2 (15 + 8z + -9z2 + -2z3) = 0 Solving 15 + 8z + -9z2 + -2z3 = 0 Solving for variable 'z'. The solution to this equation could not be determined.
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