2 2 2 2 2=0.5

2 2 2 2 2=0.5 0.5+-2/3= 0.5×2÷0.5×2 2/3x+0.5x=2 2(X-7)=0.5x+2 2(10-0.5)=-(1.5y+2) 2（10-0.5y)=-(1.5+2) 证明(2+(3)^0.5)^0.5=(6^0.5+2^0.5)/2 1.8(0.5x-2)=0.5x ((0.5)^2004)*(2^2005)=? 2X=0.5;.025 ((-2)^1000)*((-0.5)^999) = (-2)2014×(-0.5)2015=? (-2)^2009*(-0.5)^2008=? 0.2*2+0.5x ---------------- =2 0.15*2+0.2x0.2*2+0.5x---------------- =2 0.15*2+0.2x 0.5 0.5 0.5 0.5 0.5 =2填表上什么符号才能等于2 0.5(8-2×)+2×=18.8÷2 R1-R2=(h^2+(*d1-d2)/2)^2)^0.5 （