0-1/(-1)+(-1.95)^2x0-5/5

问题描述:

0-1/(-1)+(-1.95)^2x0-5/5
(1)..0-1/(-1)+(-1.95)^2x0-5/5
(2).1/[(-2)^2x0.52-(-2.24)/(-2)^3]-25/18
(3).1-(-1/2)^2+(-1)^0-(-3/4)
(4) .-2^2+(-2)^2+(2/3)^2-2/3^2

1)0-(-1)+0-1=0
2)1/(4*0.52+2.24/8)-25/18=1/(2.08+0.28)-25/18=1.25-25/18=-5/36
3)1-1/4+1+3/4=2.5
4)-4+4+4/9-2/9=2/9