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Simplifying x2 + -1x + -2 = x2 + 6x + 9 Reorder the terms: -2 + -1x + x2 = x2 + 6x + 9 Reorder the terms: -2 + -1x + x2 = 9 + 6x + x2 Add '-1x2' to each side of the equation. -2 + -1x + x2 + -1x2 = 9 + 6x + x2 + -1x2 Combine like terms: x2 + -1x2 = 0 -2 + -1x + 0 = 9 + 6x + x2 + -1x2 -2 + -1x = 9 + 6x + x2 + -1x2 Combine like terms: x2 + -1x2 = 0 -2 + -1x = 9 + 6x + 0 -2 + -1x = 9 + 6x Solving -2 + -1x = 9 + 6x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6x' to each side of the equation. -2 + -1x + -6x = 9 + 6x + -6x Combine like terms: -1x + -6x = -7x -2 + -7x = 9 + 6x + -6x Combine like terms: 6x + -6x = 0 -2 + -7x = 9 + 0 -2 + -7x = 9 Add '2' to each side of the equation. -2 + 2 + -7x = 9 + 2 Combine like terms: -2 + 2 = 0 0 + -7x = 9 + 2 -7x = 9 + 2 Combine like terms: 9 + 2 = 11 -7x = 11 Divide each side by '-7'. x = -1.571428571 Simplifying x = -1.571428571
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