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Simplifying 3z(4z + 5) = 12z2 + 15z + -9 Reorder the terms: 3z(5 + 4z) = 12z2 + 15z + -9 (5 * 3z + 4z * 3z) = 12z2 + 15z + -9 (15z + 12z2) = 12z2 + 15z + -9 Reorder the terms: 15z + 12z2 = -9 + 15z + 12z2 Add '-15z' to each side of the equation. 15z + -15z + 12z2 = -9 + 15z + -15z + 12z2 Combine like terms: 15z + -15z = 0 0 + 12z2 = -9 + 15z + -15z + 12z2 12z2 = -9 + 15z + -15z + 12z2 Combine like terms: 15z + -15z = 0 12z2 = -9 + 0 + 12z2 12z2 = -9 + 12z2 Add '-12z2' to each side of the equation. 12z2 + -12z2 = -9 + 12z2 + -12z2 Combine like terms: 12z2 + -12z2 = 0 0 = -9 + 12z2 + -12z2 Combine like terms: 12z2 + -12z2 = 0 0 = -9 + 0 0 = -9 Solving 0 = -9 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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