Question

Найдите значение выражения: 15*(1/2)²-9*(2/3)²

Answer 1

15*(1/4) - 9*(4/9)=15/4-4=-1/4

Answer 2

15*(1/2)²-9*(2/3)²=15*1/4-9*4/9=15/4-4=15/4-16/4=-1/4