Question

Tính 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.