下列化簡正確的是( )
( - 4 ) × ( - 9 ) = - 4 × - 9 = 6 | 12 × 27 = 4 × 81 = 18 |
16 + 9 4 = 16 + 9 4 = 11 2 | 4 9 25 = 4 × 9 25 = 6 5 |
【考點】二次根式的混合運算.
【答案】B
【解答】
【點評】
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發布:2024/5/27 14:0:0組卷:294引用:3難度:0.7
( - 4 ) × ( - 9 ) = - 4 × - 9 = 6 | 12 × 27 = 4 × 81 = 18 |
16 + 9 4 = 16 + 9 4 = 11 2 | 4 9 25 = 4 × 9 25 = 6 5 |