问题
解答题
化简: (1)
(2)(2x2-
|
答案
(1)
(9y-3)+2(y+1)1 3
=(1)3y-1+2y+2
=5y+1.
(2)(2x2-
+3x)-4(x-x2+1 2
)1 2
=2x2-
+3x-4x+4x2-21 2
=6x2-x-
.5 2
化简: (1)
(2)(2x2-
|
(1)
(9y-3)+2(y+1)1 3
=(1)3y-1+2y+2
=5y+1.
(2)(2x2-
+3x)-4(x-x2+1 2
)1 2
=2x2-
+3x-4x+4x2-21 2
=6x2-x-
.5 2