Rewrite: 15 x 15, 30, 15 2, 225, Rewrite: (5)(5)(5)(5)(5), 5 5, 25, 250, Rewrite: 9 x 9 x 9 x9 , 9 4, 36, 162, Rewrite: 17 x 1, 17, 18, 17 1, Solve: 13 2, 169, 26, 39, Solve: 2 5, 32, 10, 21, Solve: 23 1, 0, 23, 32, Solve 93 0, 93, 0, 1, Solve: 3 4 + 6, 87, 18, 13, Solve: 3 2 + 2 3, 17, 12, 10, Solve: 4 3 - 4 2, 84, 48, 4, Solve: 2 5 - 10, 22, 32, 0.

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