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Simplifying (r2 + r + -1)(r2 + 6r + -8) = 0 Reorder the terms: (-1 + r + r2)(r2 + 6r + -8) = 0 Reorder the terms: (-1 + r + r2)(-8 + 6r + r2) = 0 Multiply (-1 + r + r2) * (-8 + 6r + r2) (-1(-8 + 6r + r2) + r(-8 + 6r + r2) + r2(-8 + 6r + r2)) = 0 ((-8 * -1 + 6r * -1 + r2 * -1) + r(-8 + 6r + r2) + r2(-8 + 6r + r2)) = 0 ((8 + -6r + -1r2) + r(-8 + 6r + r2) + r2(-8 + 6r + r2)) = 0 (8 + -6r + -1r2 + (-8 * r + 6r * r + r2 * r) + r2(-8 + 6r + r2)) = 0 (8 + -6r + -1r2 + (-8r + 6r2 + r3) + r2(-8 + 6r + r2)) = 0 (8 + -6r + -1r2 + -8r + 6r2 + r3 + (-8 * r2 + 6r * r2 + r2 * r2)) = 0 (8 + -6r + -1r2 + -8r + 6r2 + r3 + (-8r2 + 6r3 + r4)) = 0 Reorder the terms: (8 + -6r + -8r + -1r2 + 6r2 + -8r2 + r3 + 6r3 + r4) = 0 Combine like terms: -6r + -8r = -14r (8 + -14r + -1r2 + 6r2 + -8r2 + r3 + 6r3 + r4) = 0 Combine like terms: -1r2 + 6r2 = 5r2 (8 + -14r + 5r2 + -8r2 + r3 + 6r3 + r4) = 0 Combine like terms: 5r2 + -8r2 = -3r2 (8 + -14r + -3r2 + r3 + 6r3 + r4) = 0 Combine like terms: r3 + 6r3 = 7r3 (8 + -14r + -3r2 + 7r3 + r4) = 0 Solving 8 + -14r + -3r2 + 7r3 + r4 = 0 Solving for variable 'r'. The solution to this equation could not be determined.
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