计算(√8-2√0.25)-(√9/8+2/3√72)

问题描述:

计算(√8-2√0.25)-(√9/8+2/3√72)

=2√2-√1-(3/4)√2-(2/3)*6√2
=2√2-1-(3/4)√2-4√2
=-1-(11/4)√2