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Factoring Question

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2 Answers

This is in the form a3 - b3, where a is 5x and b is 2. The factoring formula is a3 - b3 = (a - b)*(a2 + ab + b2).

125x3 +27 = (5x)3 - 23 = (5x - 2)(25x2 + 10x + 4)