Question

so sanh hai so a=3³²-1

b=(3+1)(3²+1)(3⁴+1)(3⁸+1)(3¹⁶⁺¹⁾

Answer 1

B=\(\left(3+1\right)\left(3^2+1\right)\left(3^4+1\right)\left(3^8+1\right)\left(3^{16}+1\right)\)

=>B=\(\left(3+1\right)\left(3-1\right)\left(3^2+1\right)\left(3^4+1\right)\left(3^8+1\right)\left(3^{16}+1\right)\)

=>B=\(\left(3^2-1\right)\left(3^2+1\right)\left(3^4+1\right)\left(3^8+1\right)\left(3^{16}+1\right)\)

=>B=\(\left(3^4-1\right)\left(3^4+1\right)\left(3^8+1\right)\left(3^{16}+1\right)\)

=>B=\(\left(3^8-1\right)\left(3^8+1\right)\left(3^{16}+1\right)\)

=>B=\(\left(3^{16}-1\right)\left(3^{16}+1\right)=3^{32}-1\)

vậy B=\(3^{32}-1\)

chúc bạn hcoj tốt ^^