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(2+1)(22+1)(24+1)(28+1)(216+1) - 232
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Ta có : \(\left(2+1\right)\left(2^2+1\right)\left(2^4+1\right)\left(2^8+1\right)\left(2^{16}+1\right)-2^{32}\)
\(=\left(2-1\right)\left(2+1\right)\left(2^2+1\right)\left(2^4+1\right)\left(2^8+1\right)\left(2^{16}+1\right)-2^{32}\)
\(=\left(2^2-1\right)\left(2^2+1\right)\left(2^4+1\right)\left(2^8+1\right)\left(2^{16}+1\right)-2^{32}\)
\(=\left(2^4-1\right)\left(2^4+1\right)\left(2^8+1\right)\left(2^{16}+1\right)-2^{32}\)
\(=\left(2^8-1\right)\left(2^8+1\right)\left(2^{16}+1\right)-2^{32}\)
\(=\left(2^{16}-1\right)\left(2^{16}+1\right)-2^{32}\)
\(=\left(2^{32}-1\right)-2^{32}\)
\(=-1\)
(2+1)(2^2+1)(2^4+1)(2^8+1)(2^16+1)-2^32=(2-1)(2+1)(2^2+1)(2^4+1)(2^8+1)(2^16+1)-2^32
=(2^2-1)(2^2+1)(2^4+1)(2^8+1)(2^16+1)-2^32=(2^4-1)(2^4+1)(2^8+1)(2^16+1)-2^32
=(2^8-1)(2^8+1)(2^16+1)-2^32=(2^16-1)(2^16+1)-2^32=2^32-1-2^32=-1