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Simplifying (r + -2)(r2 + 2r + 4) = 0 Reorder the terms: (-2 + r)(r2 + 2r + 4) = 0 Reorder the terms: (-2 + r)(4 + 2r + r2) = 0 Multiply (-2 + r) * (4 + 2r + r2) (-2(4 + 2r + r2) + r(4 + 2r + r2)) = 0 ((4 * -2 + 2r * -2 + r2 * -2) + r(4 + 2r + r2)) = 0 ((-8 + -4r + -2r2) + r(4 + 2r + r2)) = 0 (-8 + -4r + -2r2 + (4 * r + 2r * r + r2 * r)) = 0 (-8 + -4r + -2r2 + (4r + 2r2 + r3)) = 0 Reorder the terms: (-8 + -4r + 4r + -2r2 + 2r2 + r3) = 0 Combine like terms: -4r + 4r = 0 (-8 + 0 + -2r2 + 2r2 + r3) = 0 (-8 + -2r2 + 2r2 + r3) = 0 Combine like terms: -2r2 + 2r2 = 0 (-8 + 0 + r3) = 0 (-8 + r3) = 0 Solving -8 + r3 = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + r3 = 0 + 8 Combine like terms: -8 + 8 = 0 0 + r3 = 0 + 8 r3 = 0 + 8 Combine like terms: 0 + 8 = 8 r3 = 8 Simplifying r3 = 8 Reorder the terms: -8 + r3 = 8 + -8 Combine like terms: 8 + -8 = 0 -8 + r3 = 0 The solution to this equation could not be determined.
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