下列运算正确的是( )
A. |
﹣2x 2y•3xy 2=﹣6x 2y 2 |
B. |
(﹣x﹣2y)(x+2y)=x 2﹣4y 2 |
C. |
6x 3y 2÷2x 2y=3xy |
D. |
(4x 3y 2) 2=16x 9y 4 |
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下列运算正确的是( )
A. |
﹣2x 2y•3xy 2=﹣6x 2y 2 |
B. |
(﹣x﹣2y)(x+2y)=x 2﹣4y 2 |
C. |
6x 3y 2÷2x 2y=3xy |
D. |
(4x 3y 2) 2=16x 9y 4 |
试题篮
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