问题
解答题
(1)(
(2)化简:(
|
答案
(1)原式=4-2+1,
=3;
(2)原式=(
+4 (x+2)(x-2)
)÷x-2 (x+2)(x-2)
,(2分)1 x-2
=
•(x-2),(3分)x+2 (x+2)(x-2)
=1.(4分)
(1)(
(2)化简:(
|
(1)原式=4-2+1,
=3;
(2)原式=(
+4 (x+2)(x-2)
)÷x-2 (x+2)(x-2)
,(2分)1 x-2
=
•(x-2),(3分)x+2 (x+2)(x-2)
=1.(4分)