首先:必须从原式中看出规律:
就是 两个数先相加 再乘以前面的数.
即:
2+3 = (2+3)* 2 = 10
7+2 = (7+2)* 7 = 63
6+5 = (6+5)* 6 = 66
8+4 = (8+4)* 8 = 96
所以 9+7 = (9+7)* 9 = 144
首先:必须从原式中看出规律:
就是 两个数先相加 再乘以前面的数.
即:
2+3 = (2+3)* 2 = 10
7+2 = (7+2)* 7 = 63
6+5 = (6+5)* 6 = 66
8+4 = (8+4)* 8 = 96
所以 9+7 = (9+7)* 9 = 144