问题
填空题
化简:
|
答案
=225×0.04
×225
=15×0.2=3,0.04
=1172-1082
=(117+108)(117-108)
×225
=15×3=45.9
-2xy
=8y
-22xy
,2y
-12
=227
-33
=-3
.3
故答案为:3、45、
-22xy
、-2y
.3
化简:
|
=225×0.04
×225
=15×0.2=3,0.04
=1172-1082
=(117+108)(117-108)
×225
=15×3=45.9
-2xy
=8y
-22xy
,2y
-12
=227
-33
=-3
.3
故答案为:3、45、
-22xy
、-2y
.3