①√2+|-√3|-(2006)0次方+(1/2)负1次方
②2负1次方+(√5-1)0次方+|-√3|-√3
③√2×(√2+1/√2)-√18-√8/√2
④(-3)²+√8-|1-2√2|-(√6-3)0次方
⑤1/√2+1-√8+(√3-1)0次方
⑥(2-√3)²×(7+4√3)+(√5-2)(-2-√5)
⑦√54+6√0.75-6/√3-9/2√2又2/3
⑧1/3√x²y×(1/4√y²/x)÷1/6√x²y(x大于或等于0,y大于0)
①√2+|-√3|-(2006)0次方+(1/2)负1次方
②2负1次方+(√5-1)0次方+|-√3|-√3
③√2×(√2+1/√2)-√18-√8/√2
④(-3)²+√8-|1-2√2|-(√6-3)0次方
⑤1/√2+1-√8+(√3-1)0次方
⑥(2-√3)²×(7+4√3)+(√5-2)(-2-√5)
⑦√54+6√0.75-6/√3-9/2√2又2/3
⑧1/3√x²y×(1/4√y²/x)÷1/6√x²y(x大于或等于0,y大于0)
①√2+|-√3|-(2006)0次方+(1/2)负1次方
=√2+√3-1+2
=√2+√3+1
②2负1次方+(√5-1)0次方+|-√3|-√3
=1/2+1+√3-√3
=3/2
③√2×(√2+1/√2)-√18-√8/√2
=2+1-√8-2
=1-√8
④(-3)²+√8-|1-2√2|-(√6-3)0次方
=9+2√2-2√2+1-1
=9
⑤1/√2+1-√8+(√3-1)0次方
=√2/2+1-2√2+1
=2-3√2/2
⑥(2-√3)²×(7+4√3)+(√5-2)(-2-√5)
=(2-√3)^2X(2+√3)^2-(√5-2)(√5+2)
=[(2-√3)(2+√3)]^2-(√5^2-4)
=1-1=0
⑦√54+6√0.75-6/√3-9/2√2又2/3
=3√6+6√(3/4)-6√3-9/2√2又2/3这是怎么回事?
⑧1/3√x²y×(1/4√y²/x)÷1/6√x²y(x大于或等于0,y大于0)
=1/12xyX6x√y
后面两题太乱了,你自己做吧。