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Simplifying 25r3 + 10r2 + -40r + -16 = 0 Reorder the terms: -16 + -40r + 10r2 + 25r3 = 0 Solving -16 + -40r + 10r2 + 25r3 = 0 Solving for variable 'r'. The solution to this equation could not be determined.
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