为自己加油

试求下列各式的值：(1)[2(7/9]^1/2+(lg5)⁰+(27/64)^-(1/3)(2)log₂1/25•log₃1/8•log₅1/9

(1)原式=(25/9)^1/2+1+(64/27)^1/3=5/3+1+4/3=4．(2)原式=(-2log₂5)(-3log₃2)(-2log₅3)=-12log₂5•log₃2•(log₂3)(log₂5)=-12