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Simplifying (r + -7)(3r2 + -7r + 5) = 0 Reorder the terms: (-7 + r)(3r2 + -7r + 5) = 0 Reorder the terms: (-7 + r)(5 + -7r + 3r2) = 0 Multiply (-7 + r) * (5 + -7r + 3r2) (-7(5 + -7r + 3r2) + r(5 + -7r + 3r2)) = 0 ((5 * -7 + -7r * -7 + 3r2 * -7) + r(5 + -7r + 3r2)) = 0 ((-35 + 49r + -21r2) + r(5 + -7r + 3r2)) = 0 (-35 + 49r + -21r2 + (5 * r + -7r * r + 3r2 * r)) = 0 (-35 + 49r + -21r2 + (5r + -7r2 + 3r3)) = 0 Reorder the terms: (-35 + 49r + 5r + -21r2 + -7r2 + 3r3) = 0 Combine like terms: 49r + 5r = 54r (-35 + 54r + -21r2 + -7r2 + 3r3) = 0 Combine like terms: -21r2 + -7r2 = -28r2 (-35 + 54r + -28r2 + 3r3) = 0 Solving -35 + 54r + -28r2 + 3r3 = 0 Solving for variable 'r'. The solution to this equation could not be determined.
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