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Factor: 9x2−369x^2-369x2−36
Factor: 121x4−49121x^4-49121x4−49
Factor: x2−81x^2-81x2−81
Factor: x2−4x^2-4x2−4
Factor: 9x4−169x^4-169x4−16
Factor: 4x2−164x^2-164x2−16
Factor: x2−121x^2-121x2−121
Factor: 4x2−1004x^2-1004x2−100
Factor: 81x12−16981x^{12}-16981x12−169
It is done.