11×11=121,12×12=144,
13×13=169,14×14=196,
15×15=225,16×16=256,
17×17=289,18×18=324,
19×19=361,
15×15=225,25×25=625,35×35=1225,45×45=2025,55×55 625,75×75=5625,85×85=7225,95×95=9025,
看明白了其中规律吗?
11×11=121,12×12=144,
13×13=169,14×14=196,
15×15=225,16×16=256,
17×17=289,18×18=324,
19×19=361,
15×15=225,25×25=625,35×35=1225,45×45=2025,55×55 625,75×75=5625,85×85=7225,95×95=9025,
看明白了其中规律吗?
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