Срочносрочносрочносрочносрочно!!!!!! №23.32(а)
(2ⁿ-1)*(4ⁿ+2ⁿ+1)=511 (2ˣ-1)*(2²ˣ+2ˣ+1²)=511 (2ˣ)³-1³=511 8x³=512 x³=64 x³=4³ x=4.