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Simplifying -7x * x + 5 + 6x * x = 12 + -1(2 + x * x) Multiply x * x -7x2 + 5 + 6x * x = 12 + -1(2 + x * x) Multiply x * x -7x2 + 5 + 6x2 = 12 + -1(2 + x * x) Reorder the terms: 5 + -7x2 + 6x2 = 12 + -1(2 + x * x) Combine like terms: -7x2 + 6x2 = -1x2 5 + -1x2 = 12 + -1(2 + x * x) Multiply x * x 5 + -1x2 = 12 + -1(2 + x2) 5 + -1x2 = 12 + (2 * -1 + x2 * -1) 5 + -1x2 = 12 + (-2 + -1x2) Combine like terms: 12 + -2 = 10 5 + -1x2 = 10 + -1x2 Add 'x2' to each side of the equation. 5 + -1x2 + x2 = 10 + -1x2 + x2 Combine like terms: -1x2 + x2 = 0 5 + 0 = 10 + -1x2 + x2 5 = 10 + -1x2 + x2 Combine like terms: -1x2 + x2 = 0 5 = 10 + 0 5 = 10 Solving 5 = 10 Couldn't find a variable to solve for. This equation is invalid, the left and right sides are not equal, therefore there is no solution.
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