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x⁶ - 726 factorise |
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Answer» Change in question x6 - 76 factorise x6 - 76 = (x2)3 - (72)3 = (x2 - 72) ((x2)2 + x2 x 72 + (72)2) (∵ a3 - b3) = (a - b) (a2 + ab + b2)) = (x - 7) (x + ) (x4 + 49x2 + 2401) |
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