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Simplifying 15x2 + 1 + -1[4(x2 + -8) + 7] = 0 Reorder the terms: 15x2 + 1 + -1[4(-8 + x2) + 7] = 0 15x2 + 1 + -1[(-8 * 4 + x2 * 4) + 7] = 0 15x2 + 1 + -1[(-32 + 4x2) + 7] = 0 Reorder the terms: 15x2 + 1 + -1[-32 + 7 + 4x2] = 0 Combine like terms: -32 + 7 = -25 15x2 + 1 + -1[-25 + 4x2] = 0 15x2 + 1 + [-25 * -1 + 4x2 * -1] = 0 15x2 + 1 + [25 + -4x2] = 0 Reorder the terms: 1 + 25 + 15x2 + -4x2 = 0 Combine like terms: 1 + 25 = 26 26 + 15x2 + -4x2 = 0 Combine like terms: 15x2 + -4x2 = 11x2 26 + 11x2 = 0 Solving 26 + 11x2 = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-26' to each side of the equation. 26 + -26 + 11x2 = 0 + -26 Combine like terms: 26 + -26 = 0 0 + 11x2 = 0 + -26 11x2 = 0 + -26 Combine like terms: 0 + -26 = -26 11x2 = -26 Divide each side by '11'. x2 = -2.363636364 Simplifying x2 = -2.363636364 Reorder the terms: 2.363636364 + x2 = -2.363636364 + 2.363636364 Combine like terms: -2.363636364 + 2.363636364 = 0.000000000 2.363636364 + x2 = 0.000000000 The solution to this equation could not be determined.
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