问题
解答题
化简: (1)
(2)
(3)
|
答案
(1)
=72
=62×36
;2
(2)∵a≥0,b≥0,
∴
=4ab2;16a2b4
(3)∵x<-1,x+1<0,
∴
=(x+1)(-x2+x+2)
=-(x+1)-(x+1)2(x-2)
.2-x
化简: (1)
(2)
(3)
|
(1)
=72
=62×36
;2
(2)∵a≥0,b≥0,
∴
=4ab2;16a2b4
(3)∵x<-1,x+1<0,
∴
=(x+1)(-x2+x+2)
=-(x+1)-(x+1)2(x-2)
.2-x