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Simplifying 9z(z + 5) = 9z2 + 45z + -2 Reorder the terms: 9z(5 + z) = 9z2 + 45z + -2 (5 * 9z + z * 9z) = 9z2 + 45z + -2 (45z + 9z2) = 9z2 + 45z + -2 Reorder the terms: 45z + 9z2 = -2 + 45z + 9z2 Add '-45z' to each side of the equation. 45z + -45z + 9z2 = -2 + 45z + -45z + 9z2 Combine like terms: 45z + -45z = 0 0 + 9z2 = -2 + 45z + -45z + 9z2 9z2 = -2 + 45z + -45z + 9z2 Combine like terms: 45z + -45z = 0 9z2 = -2 + 0 + 9z2 9z2 = -2 + 9z2 Add '-9z2' to each side of the equation. 9z2 + -9z2 = -2 + 9z2 + -9z2 Combine like terms: 9z2 + -9z2 = 0 0 = -2 + 9z2 + -9z2 Combine like terms: 9z2 + -9z2 = 0 0 = -2 + 0 0 = -2 Solving 0 = -2 Couldn't find a variable to solve for. This equation is invalid, the left and right sides are not equal, therefore there is no solution.
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