问题
解答题
化简 (1)(1-
(2)(
(3)(1+
|
答案
(1)原式=(
y+x |
y+x |
y |
y+x |
(y+x)(y-x) |
x |
x |
y+x |
(y+x)(y-x) |
x |
(2)原式=
a2-9 |
a-3 |
a |
a+3 |
(a+3)(a-3) |
a-3 |
a |
a+3 |
(3)原式=
a-2+3 |
a-2 |
(a+2)(a-2) |
a+1 |
a+1 |
a-2 |
(a+2)(a-2) |
a+1 |
化简 (1)(1-
(2)(
(3)(1+
|
(1)原式=(
y+x |
y+x |
y |
y+x |
(y+x)(y-x) |
x |
x |
y+x |
(y+x)(y-x) |
x |
(2)原式=
a2-9 |
a-3 |
a |
a+3 |
(a+3)(a-3) |
a-3 |
a |
a+3 |
(3)原式=
a-2+3 |
a-2 |
(a+2)(a-2) |
a+1 |
a+1 |
a-2 |
(a+2)(a-2) |
a+1 |