Question

Tinh nhanh

(-98).(1-246)-246.98

Answer 1

 (- 98). (1 - 246) – 246.98
= - 98.1 – (-98).246 – 246 .98
= - 98 + 98.246 – 246 .98
= -98 + (98.246 – 246.98)
= - 98 + 0 
= -98

Answer 2

trinh bai ro rang di