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Simplifying (x2 + 8x + 7)(x2 + 8x + 15) = 9 Reorder the terms: (7 + 8x + x2)(x2 + 8x + 15) = 9 Reorder the terms: (7 + 8x + x2)(15 + 8x + x2) = 9 Multiply (7 + 8x + x2) * (15 + 8x + x2) (7(15 + 8x + x2) + 8x * (15 + 8x + x2) + x2(15 + 8x + x2)) = 9 ((15 * 7 + 8x * 7 + x2 * 7) + 8x * (15 + 8x + x2) + x2(15 + 8x + x2)) = 9 ((105 + 56x + 7x2) + 8x * (15 + 8x + x2) + x2(15 + 8x + x2)) = 9 (105 + 56x + 7x2 + (15 * 8x + 8x * 8x + x2 * 8x) + x2(15 + 8x + x2)) = 9 (105 + 56x + 7x2 + (120x + 64x2 + 8x3) + x2(15 + 8x + x2)) = 9 (105 + 56x + 7x2 + 120x + 64x2 + 8x3 + (15 * x2 + 8x * x2 + x2 * x2)) = 9 (105 + 56x + 7x2 + 120x + 64x2 + 8x3 + (15x2 + 8x3 + x4)) = 9 Reorder the terms: (105 + 56x + 120x + 7x2 + 64x2 + 15x2 + 8x3 + 8x3 + x4) = 9 Combine like terms: 56x + 120x = 176x (105 + 176x + 7x2 + 64x2 + 15x2 + 8x3 + 8x3 + x4) = 9 Combine like terms: 7x2 + 64x2 = 71x2 (105 + 176x + 71x2 + 15x2 + 8x3 + 8x3 + x4) = 9 Combine like terms: 71x2 + 15x2 = 86x2 (105 + 176x + 86x2 + 8x3 + 8x3 + x4) = 9 Combine like terms: 8x3 + 8x3 = 16x3 (105 + 176x + 86x2 + 16x3 + x4) = 9 Solving 105 + 176x + 86x2 + 16x3 + x4 = 9 Solving for variable 'x'. Reorder the terms: 105 + -9 + 176x + 86x2 + 16x3 + x4 = 9 + -9 Combine like terms: 105 + -9 = 96 96 + 176x + 86x2 + 16x3 + x4 = 9 + -9 Combine like terms: 9 + -9 = 0 96 + 176x + 86x2 + 16x3 + x4 = 0 The solution to this equation could not be determined.
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