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Simplifying r * r * r * r = 0 Multiply r * r r2 * r * r = 0 Multiply r2 * r r3 * r = 0 Multiply r3 * r r4 = 0 Solving r4 = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Simplifying r4 = 0 The solution to this equation could not be determined.
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