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Simplifying 20x2 + 4 + -1[7(x2 + -2) + 5] = 0 Reorder the terms: 20x2 + 4 + -1[7(-2 + x2) + 5] = 0 20x2 + 4 + -1[(-2 * 7 + x2 * 7) + 5] = 0 20x2 + 4 + -1[(-14 + 7x2) + 5] = 0 Reorder the terms: 20x2 + 4 + -1[-14 + 5 + 7x2] = 0 Combine like terms: -14 + 5 = -9 20x2 + 4 + -1[-9 + 7x2] = 0 20x2 + 4 + [-9 * -1 + 7x2 * -1] = 0 20x2 + 4 + [9 + -7x2] = 0 Reorder the terms: 4 + 9 + 20x2 + -7x2 = 0 Combine like terms: 4 + 9 = 13 13 + 20x2 + -7x2 = 0 Combine like terms: 20x2 + -7x2 = 13x2 13 + 13x2 = 0 Solving 13 + 13x2 = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-13' to each side of the equation. 13 + -13 + 13x2 = 0 + -13 Combine like terms: 13 + -13 = 0 0 + 13x2 = 0 + -13 13x2 = 0 + -13 Combine like terms: 0 + -13 = -13 13x2 = -13 Divide each side by '13'. x2 = -1 Simplifying x2 = -1 Reorder the terms: 1 + x2 = -1 + 1 Combine like terms: -1 + 1 = 0 1 + x2 = 0 The solution to this equation could not be determined.
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