问题
解答题
计算化简 (1)计算:
(2)化简:(
|
答案
(1)原式=2
+2-3 1 2- 3
=2
+2-(2-3
)3
=
;3
(2)原式=[
-2x (x+3)(x-3)
]÷1 x-3 x x+3
=
•2x-(x+3) (x+3)(x-3) x+3 x
=1 x
当x=1时,原式=1.
计算化简 (1)计算:
(2)化简:(
|
(1)原式=2
+2-3 1 2- 3
=2
+2-(2-3
)3
=
;3
(2)原式=[
-2x (x+3)(x-3)
]÷1 x-3 x x+3
=
•2x-(x+3) (x+3)(x-3) x+3 x
=1 x
当x=1时,原式=1.