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Simplifying 20x2 + 7 + -1[4(x2 + -7) + 8] = 0 Reorder the terms: 20x2 + 7 + -1[4(-7 + x2) + 8] = 0 20x2 + 7 + -1[(-7 * 4 + x2 * 4) + 8] = 0 20x2 + 7 + -1[(-28 + 4x2) + 8] = 0 Reorder the terms: 20x2 + 7 + -1[-28 + 8 + 4x2] = 0 Combine like terms: -28 + 8 = -20 20x2 + 7 + -1[-20 + 4x2] = 0 20x2 + 7 + [-20 * -1 + 4x2 * -1] = 0 20x2 + 7 + [20 + -4x2] = 0 Reorder the terms: 7 + 20 + 20x2 + -4x2 = 0 Combine like terms: 7 + 20 = 27 27 + 20x2 + -4x2 = 0 Combine like terms: 20x2 + -4x2 = 16x2 27 + 16x2 = 0 Solving 27 + 16x2 = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-27' to each side of the equation. 27 + -27 + 16x2 = 0 + -27 Combine like terms: 27 + -27 = 0 0 + 16x2 = 0 + -27 16x2 = 0 + -27 Combine like terms: 0 + -27 = -27 16x2 = -27 Divide each side by '16'. x2 = -1.6875 Simplifying x2 = -1.6875 Reorder the terms: 1.6875 + x2 = -1.6875 + 1.6875 Combine like terms: -1.6875 + 1.6875 = 0.0000 1.6875 + x2 = 0.0000 The solution to this equation could not be determined.
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