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Simplifying 7x * 3x * x + 9 = 0 Reorder the terms for easier multiplication: 7 * 3x * x * x + 9 = 0 Multiply 7 * 3 21x * x * x + 9 = 0 Multiply x * x 21x2 * x + 9 = 0 Multiply x2 * x 21x3 + 9 = 0 Reorder the terms: 9 + 21x3 = 0 Solving 9 + 21x3 = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + 21x3 = 0 + -9 Combine like terms: 9 + -9 = 0 0 + 21x3 = 0 + -9 21x3 = 0 + -9 Combine like terms: 0 + -9 = -9 21x3 = -9 Divide each side by '21'. x3 = -0.4285714286 Simplifying x3 = -0.4285714286 Reorder the terms: 0.4285714286 + x3 = -0.4285714286 + 0.4285714286 Combine like terms: -0.4285714286 + 0.4285714286 = 0.0000000000 0.4285714286 + x3 = 0.0000000000 The solution to this equation could not be determined.
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