下列計算正確的是( )
( - 16 ) ( - 9 ) = 16 ? - 9 = - 4 × ( - 3 ) = 12 |
( - 10 ) 2 = - 10 |
8 2 + 5 2 = 8 + 5 = 13 |
25 2 - 24 2 = ( 25 + 24 ) ( 25 - 24 ) = 49 = 7 |
【考點】實數的運算.
【答案】D
【解答】
【點評】
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發布:2025/6/6 2:30:2組卷:23引用:2難度:0.7
( - 16 ) ( - 9 ) = 16 ? - 9 = - 4 × ( - 3 ) = 12 |
( - 10 ) 2 = - 10 |
8 2 + 5 2 = 8 + 5 = 13 |
25 2 - 24 2 = ( 25 + 24 ) ( 25 - 24 ) = 49 = 7 |