原式=(a-b)(a+b)(a^2+b^2)(a^4+b^4)(a^8+b^8)(a^16+b^16)/(a-b)
=(a^2-b^2)(a^2+b^2)(a^4+b^4)(a^8+b^8)(a^16+b^16)/(a-b)
=(a^4-b^4)(a^4+b^4)(a^8+b^8)(a^16+b^16)/(a-b)
=(a^8-b^8)(a^8+b^8)(a^16+b^16)/(a-b)
=(a^16-b^16)(a^16+b^16)/(a-b)
=(a^32-b^32)/(a-b)
原式=(a-b)(a+b)(a^2+b^2)(a^4+b^4)(a^8+b^8)(a^16+b^16)/(a-b)
=(a^2-b^2)(a^2+b^2)(a^4+b^4)(a^8+b^8)(a^16+b^16)/(a-b)
=(a^4-b^4)(a^4+b^4)(a^8+b^8)(a^16+b^16)/(a-b)
=(a^8-b^8)(a^8+b^8)(a^16+b^16)/(a-b)
=(a^16-b^16)(a^16+b^16)/(a-b)
=(a^32-b^32)/(a-b)