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Simplifying (4r + -7)(r2 + -4r + 3) = 0 Reorder the terms: (-7 + 4r)(r2 + -4r + 3) = 0 Reorder the terms: (-7 + 4r)(3 + -4r + r2) = 0 Multiply (-7 + 4r) * (3 + -4r + r2) (-7(3 + -4r + r2) + 4r * (3 + -4r + r2)) = 0 ((3 * -7 + -4r * -7 + r2 * -7) + 4r * (3 + -4r + r2)) = 0 ((-21 + 28r + -7r2) + 4r * (3 + -4r + r2)) = 0 (-21 + 28r + -7r2 + (3 * 4r + -4r * 4r + r2 * 4r)) = 0 (-21 + 28r + -7r2 + (12r + -16r2 + 4r3)) = 0 Reorder the terms: (-21 + 28r + 12r + -7r2 + -16r2 + 4r3) = 0 Combine like terms: 28r + 12r = 40r (-21 + 40r + -7r2 + -16r2 + 4r3) = 0 Combine like terms: -7r2 + -16r2 = -23r2 (-21 + 40r + -23r2 + 4r3) = 0 Solving -21 + 40r + -23r2 + 4r3 = 0 Solving for variable 'r'. The solution to this equation could not be determined.
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