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Simplifying 9x2 + -28 = 0 Reorder the terms: -28 + 9x2 = 0 Solving -28 + 9x2 = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '28' to each side of the equation. -28 + 28 + 9x2 = 0 + 28 Combine like terms: -28 + 28 = 0 0 + 9x2 = 0 + 28 9x2 = 0 + 28 Combine like terms: 0 + 28 = 28 9x2 = 28 Divide each side by '9'. x2 = 3.111111111 Simplifying x2 = 3.111111111 Take the square root of each side: x = {-1.763834207, 1.763834207}
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