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Simplifying (x + 1)(x + -1)(2x + 5) = 90 Reorder the terms: (1 + x)(x + -1)(2x + 5) = 90 Reorder the terms: (1 + x)(-1 + x)(2x + 5) = 90 Reorder the terms: (1 + x)(-1 + x)(5 + 2x) = 90 Multiply (1 + x) * (-1 + x) (1(-1 + x) + x(-1 + x))(5 + 2x) = 90 ((-1 * 1 + x * 1) + x(-1 + x))(5 + 2x) = 90 ((-1 + 1x) + x(-1 + x))(5 + 2x) = 90 (-1 + 1x + (-1 * x + x * x))(5 + 2x) = 90 (-1 + 1x + (-1x + x2))(5 + 2x) = 90 Combine like terms: 1x + -1x = 0 (-1 + 0 + x2)(5 + 2x) = 90 (-1 + x2)(5 + 2x) = 90 Multiply (-1 + x2) * (5 + 2x) (-1(5 + 2x) + x2(5 + 2x)) = 90 ((5 * -1 + 2x * -1) + x2(5 + 2x)) = 90 ((-5 + -2x) + x2(5 + 2x)) = 90 (-5 + -2x + (5 * x2 + 2x * x2)) = 90 (-5 + -2x + (5x2 + 2x3)) = 90 (-5 + -2x + 5x2 + 2x3) = 90 Solving -5 + -2x + 5x2 + 2x3 = 90 Solving for variable 'x'. Reorder the terms: -5 + -90 + -2x + 5x2 + 2x3 = 90 + -90 Combine like terms: -5 + -90 = -95 -95 + -2x + 5x2 + 2x3 = 90 + -90 Combine like terms: 90 + -90 = 0 -95 + -2x + 5x2 + 2x3 = 0 The solution to this equation could not be determined.
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