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Simplifying 20 * 20 * 20 + 2 * 20 * 20 + 7 * 20 + 2 = 0 Multiply 20 * 20 400 * 20 + 2 * 20 * 20 + 7 * 20 + 2 = 0 Multiply 400 * 20 8000 + 2 * 20 * 20 + 7 * 20 + 2 = 0 Multiply 2 * 20 8000 + 40 * 20 + 7 * 20 + 2 = 0 Multiply 40 * 20 8000 + 800 + 7 * 20 + 2 = 0 Multiply 7 * 20 8000 + 800 + 140 + 2 = 0 Combine like terms: 8000 + 800 = 8800 8800 + 140 + 2 = 0 Combine like terms: 8800 + 140 = 8940 8940 + 2 = 0 Combine like terms: 8940 + 2 = 8942 8942 = 0 Solving 8942 = 0 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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