【(2+xy)(xy-2)-xy(xy+1)+4】/(-2xy) 一道计算题!
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【(2+xy)(xy-2)-xy(xy+1)+4】/(-2xy) 一道计算题!
【(2+xy)(xy-2)-xy(xy+1)+4】/(-2xy) 一道计算题!
【(2+xy)(xy-2)-xy(xy+1)+4】/(-2xy) 一道计算题!
=(x²y²-4-x²y²-xy+4)/(-2xy)
=-xy/(-2xy)
=1/2
整理 {(xy+2)(xy-2)-(xy)^2-xy+4 }/-2xy
=(xy)^2-4-(xy)^2+4/-2xy=0
3xy-4xy-(-2xy)
3xy-4xy-(-2xy)
(-3xy+2xy)-(4xy+xy)
(-4xy^3)×(-xy)+(-3xy^2)^2
计算:3xy-4xy-(-2xy)要过程
(1)3xy-4xy-(-2xy)
(3xy²)*(-2xy)
先去括号,再合并同类项: -3xy+(2xy+3xy-2xy)
xy
【(2+xy)(xy-2)-xy(xy+1)+4】/(-2xy) 一道计算题!
(X-3xy+4xy-y)-[-2x-2(xy-3/2xy)-y]+6xy的过程
计算:3xy(x²y-xy²+xy)-xy²(2x-xy+2x)
1.3xy -4xy-(2xy)
3xy-3xy-xy+2yx
2xy.(-3xy)÷(xy)
2xy-xy-(-3xy)=
[(2xy-3)(2xy+3)+(xy+3)^2]/(-xy)
xy-3xy+2xy-xy