配套习题- 分式的加减运算(一) -【青果学苑】

1/5单选题

难度：

1.分式

的最简公分母是（）

A	5abx
B	15ab
C	15abx
D	15ab

正确答案：RA==

6Kej562U77yaPGltZyB3aWR0aD0xMDIgaGVpZ2h0PTQzIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvM0UvRTcvckJBQ0oxVElsN3pUV1F3bEFBQURjNXJvT0k0NDAyLnBuZyI+55qE5pyA566A5YWs5YiG5q+N5Li6MTVhYjxpbWcgd2lkdGg9MTkgaGVpZ2h0PTIzIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvNzMvMUQvckJBQ0UxVElsN3lobGIycEFBQUJYOTJxUVMwODgxLnBuZyI+PGJyPuaVhemAiUQ=

2/5单选题

难度：

2.下列算式中正确的是（）

A
B
C
D

正确答案：QQ==

6Kej562U77yaQe+8jOWIhuavjeebuOWQjO+8jOWIhuavjeS4jeWPmO+8jOWIhuWtkOebuOWKoO+8jDxpbWcgd2lkdGg9NzYgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvM0UvQTkvckJBQ0psVElsOHFBSjFpNEFBQUI5UGVheFZVMjAxLnBuZyI+PGJyPuaVhemAiUE=

3/5单选题

难度：

3.在分式①

②

；③

④

中分母相同的分式是（）

A	①③④
B	②③
C	②④
D	①③

正确答案：Qw==

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

4/5单选题

难度：

4.分式

，

，的最简公分母是 ( )

A	(x²-9)(x²+x-6)(x+2)
B	(x²-9)(x+2)
C	(x²+x-6)(x+2)
D	(x+3)(x-3)(x+2)(x-2)

正确答案：RA==

6Kej562U77ya4oi1PGltZyB3aWR0aD00MCBoZWlnaHQ9Mzggc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC83My8xRC9yQkFDRTFUSWw4Q3d4TGV1QUFBQi1HQjhZMmcyMjcucG5nIj49PGltZyB3aWR0aD04NCBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC83My8xRC9yQkFDRTFUSWw4Q0NjcmQwQUFBQ1M0alpsc0U4NjUucG5nIj47IDxpbWcgd2lkdGg9NTggaGVpZ2h0PTM4IHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvM0UvQTkvckJBQ0psVElsOENqc1h0b0FBQUJfTkhpRlhZMzk0LnBuZyI+PTxpbWcgd2lkdGg9ODQgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvQUEvMjUvckJBQ0ZGVElsOEN6cTZ3V0FBQUNYRnFaWGZnMzkzLnBuZyI+IDs8aW1nIHdpZHRoPTM0IGhlaWdodD0zOCBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzNFL0U3L3JCQUNKMVRJbDhEQldkbS1BQUFCbklCbmRuTTg4MC5wbmciPiw8YnI+5omA5Lul5pyA566A5YWs5YiG5q+N5Li6PGltZyB3aWR0aD0xNzYgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvQUEvMjYvckJBQ0ZGVElsOEREYmY2MEFBQUNXUWF2T0c0ODA2LnBuZyI+PGJyPuaVhemAiUQ=

5/5单选题

难度：

5.已知x

,则

等于（）

A
B
C
D

正确答案：RA==

6Kej562U77ya4oi1PGltZyB3aWR0aD04NSBoZWlnaHQ9NDMgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC8zRS9BOS9yQkFDSmxUSWw4YmhTVUpTQUFBQ2N1Xy1wRnc3MTUucG5nIj49PGltZyB3aWR0aD0xNDIgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvNzMvMUQvckJBQ0UxVElsOGF5b0NlU0FBQUNyVEkxbGQ4Mzk3LnBuZyI+PGJyPuaVhemAiUQ=