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Simplifying (2x) * x + -1 = 5 Remove parenthesis around (2x) 2x * x + -1 = 5 Multiply x * x 2x2 + -1 = 5 Reorder the terms: -1 + 2x2 = 5 Solving -1 + 2x2 = 5 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + 2x2 = 5 + 1 Combine like terms: -1 + 1 = 0 0 + 2x2 = 5 + 1 2x2 = 5 + 1 Combine like terms: 5 + 1 = 6 2x2 = 6 Divide each side by '2'. x2 = 3 Simplifying x2 = 3 Take the square root of each side: x = {-1.732050808, 1.732050808}
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