(-7分之3)²*9分之7+3分之1(-7分之3)² *9分之7+3分之1 .7分之3+7分之2²-0.38+(-1)
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/05 02:48:55
![(-7分之3)²*9分之7+3分之1(-7分之3)² *9分之7+3分之1 .7分之3+7分之2²-0.38+(-1)](/uploads/image/z/466624-64-4.jpg?t=%EF%BC%88-7%E5%88%86%E4%B9%8B3%EF%BC%89%26%23178%3B%2A9%E5%88%86%E4%B9%8B7%2B3%E5%88%86%E4%B9%8B1%EF%BC%88-7%E5%88%86%E4%B9%8B3%EF%BC%89%26%23178%3B+%2A9%E5%88%86%E4%B9%8B7%2B3%E5%88%86%E4%B9%8B1+.7%E5%88%86%E4%B9%8B3%2B7%E5%88%86%E4%B9%8B2%26%23178%3B-0.38%2B%EF%BC%88-1%EF%BC%89)
(-7分之3)²*9分之7+3分之1(-7分之3)² *9分之7+3分之1 .7分之3+7分之2²-0.38+(-1)
(-7分之3)²*9分之7+3分之1
(-7分之3)² *9分之7+3分之1 .7分之3+7分之2²-0.38+(-1)
(-7分之3)²*9分之7+3分之1(-7分之3)² *9分之7+3分之1 .7分之3+7分之2²-0.38+(-1)
﹙﹣3/7﹚²×7/9+1/3
=9/49×7/9+1/3
=1/7+1/3
=10/21
3/7+2²/7-0.38+﹙﹣1﹚
=1-0.30-1
=﹣0.38