(1-2b) (1+2b) (1+4b)в квадрате

Question

(1-2b) (1+2b) (1+4b)в квадрате

Answer 1

(1-2b)(1+2b)(1+4b)²
(1-4b²)(1+8b+16b²)
1+8b+16b²-4b²-32b³-64b^4
1+8b+12b²-32b³-64b^4
-64b^4-32b³+12b²+8b+1