计算16^(1/log6(4))+49^(1/log8(7))
问题描述：
计算16^(1/log6(4))+49^(1/log8(7))
答
=16^(log4(6))+49^(log7(8))
=[4^(log4(6))]^2+[7^(log7(8))]^2
=6^2+8^2
=100