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Simplifying x(x + 20x) = -99 Combine like terms: x + 20x = 21x x(21x) = -99 Remove parenthesis around (21x) x * 21x = -99 Reorder the terms for easier multiplication: 21x * x = -99 Multiply x * x 21x2 = -99 Solving 21x2 = -99 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Divide each side by '21'. x2 = -4.714285714 Simplifying x2 = -4.714285714 Reorder the terms: 4.714285714 + x2 = -4.714285714 + 4.714285714 Combine like terms: -4.714285714 + 4.714285714 = 0.000000000 4.714285714 + x2 = 0.000000000 The solution to this equation could not be determined.
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