zastosuj wzór skróconego mnożenia
(1-2x-6)²
(1-2x-6)^ = a^ + b^ + c^ - 2ab - 2ac + 2bc = 1 + 4x^ + 36 - 2*2x - 2*6 + 2*12x^ = 1 + 4x^ + 36 - 4x - 45 + 24x^ = - 8 + 24 x^
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(1-2x-6)^ = a^ + b^ + c^ - 2ab - 2ac + 2bc = 1 + 4x^ + 36 - 2*2x - 2*6 + 2*12x^ = 1 + 4x^ + 36 - 4x - 45 + 24x^ = - 8 + 24 x^
(1-2x-6)^ = a^ + b^ + c^ - 2ab - 2ac + 2bc = 1 + 4x^ + 36 - 2*2x - 2*6 + 2*12x^ = 1 + 4x^ + 36 - 4x - 45 + 24x^ = - 8 + 24 x^