(3根号下27-6根号下1/2)-(8根号下0.125-6根号下1/12)
问题描述:
(3根号下27-6根号下1/2)-(8根号下0.125-6根号下1/12)
9根号下45*3根号下1/5*3/2根号下8/3
(根号下3-1)^2-(根号下3)^2
答
[3√27 -6√(1/2)] - [8√0.125-6√(1/12)]
=9√3 - 3√2 -2√2 + √3
=10√3 - 5√2
9√(45×3) √(3/10)√(8/3)=54√3
(√3 - 1)^2 - (√3)^2 = (2√3-1)(-1)=1-2√3