[tex] \frac{25}{100} \times 144 = \frac{25 \times 144}{100} = \frac{3600}{100} = 36[/tex]
✓36=6==>36=6² patrat perfect
[tex]( \frac{1}{3} {}^{ \times 10} + \frac{1}{2} {}^{ \times 15} + \frac{4}{5} {}^{ \times 6} ) \times 30 = \\ \\ \frac{10 + 15 +24 }{30} \times 30 = \\ = 10 + 15 + 24 = \\ = 49[/tex]
✓49=7 ==>49=7² patrat perfect
…ᘛ⁐̤ᕐᐷฅ^•ﻌ•^ฅ
