(10+3⼀5)x(9+2⼀5)简便运算

2025-06-23 02:15:48
推荐回答(3个)
回答1:

(10+3/5)x(9+2/5)
=(10+3/5))✘(10-3/5)
=10^2-(3/5)^2
=100-9/25
=99又16/25

回答2:

10*9+(3/5-2/5)
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回答3: