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Simplifying (d + 1)(d + -5)(3d + 4) = 0 Reorder the terms: (1 + d)(d + -5)(3d + 4) = 0 Reorder the terms: (1 + d)(-5 + d)(3d + 4) = 0 Reorder the terms: (1 + d)(-5 + d)(4 + 3d) = 0 Multiply (1 + d) * (-5 + d) (1(-5 + d) + d(-5 + d))(4 + 3d) = 0 ((-5 * 1 + d * 1) + d(-5 + d))(4 + 3d) = 0 ((-5 + 1d) + d(-5 + d))(4 + 3d) = 0 (-5 + 1d + (-5 * d + d * d))(4 + 3d) = 0 (-5 + 1d + (-5d + d2))(4 + 3d) = 0 Combine like terms: 1d + -5d = -4d (-5 + -4d + d2)(4 + 3d) = 0 Multiply (-5 + -4d + d2) * (4 + 3d) (-5(4 + 3d) + -4d * (4 + 3d) + d2(4 + 3d)) = 0 ((4 * -5 + 3d * -5) + -4d * (4 + 3d) + d2(4 + 3d)) = 0 ((-20 + -15d) + -4d * (4 + 3d) + d2(4 + 3d)) = 0 (-20 + -15d + (4 * -4d + 3d * -4d) + d2(4 + 3d)) = 0 (-20 + -15d + (-16d + -12d2) + d2(4 + 3d)) = 0 (-20 + -15d + -16d + -12d2 + (4 * d2 + 3d * d2)) = 0 (-20 + -15d + -16d + -12d2 + (4d2 + 3d3)) = 0 Combine like terms: -15d + -16d = -31d (-20 + -31d + -12d2 + 4d2 + 3d3) = 0 Combine like terms: -12d2 + 4d2 = -8d2 (-20 + -31d + -8d2 + 3d3) = 0 Solving -20 + -31d + -8d2 + 3d3 = 0 Solving for variable 'd'. The solution to this equation could not be determined.
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