Question

下列等式能够成立的是（　　）

A． 6 (3-π)6 =3-π	B． 12 (-2)4 = 3 -2
C． 3 9 = 3 3	D． 4 x3+y3 =(x+y) 3 4

Answer 1

∵

6	(3-π)6

=|3-π|     

12	(-2)4

=

3	2

   

4	x3+y3

=(x3+y3) 

1

4

而

3 9

=

3	9

1

2

= (9

1

3

)

1

2

=9

1

6

=3

1

3

= 

3	3

故选C