Срочносрочносрочносрочносрочно!!!!!!№23.32(а)

Question

Срочносрочносрочносрочносрочно!!!!!!
№23.32(а)

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Answer 1

(2ⁿ-1)*(4ⁿ+2ⁿ+1)=511
(2ˣ-1)*(2²ˣ+2ˣ+1²)=511
(2ˣ)³-1³=511
8x³=512
x³=64
x³=4³
x=4.