Question

СРОЧНО 20 БАЛОВ 7 КЛАСС​

Answer 1

Ответ:

1. (1/3а-3/4б)(1/3а+3/4б)

2. (0.5х-0.9б)(0.5х+0.9б)

3. (0.1х^2-у)(0.1х^2+у)

4. (0,7n^3m^3-1)(0,7n^3m^3+1)