2的X次方等于6,2的y次方等于3,求2的2x-3y次方的值
问题描述:
2的X次方等于6,2的y次方等于3,求2的2x-3y次方的值
答
2^x=6,(2^x)^2=2^2x=6^2=36,2^=3,(2^y)^3=2^3y=3^3=27,2^(2-3)=(2^2x)/(2^3y)=4/3
2的X次方等于6,2的y次方等于3,求2的2x-3y次方的值
2^x=6,(2^x)^2=2^2x=6^2=36,2^=3,(2^y)^3=2^3y=3^3=27,2^(2-3)=(2^2x)/(2^3y)=4/3