Question

tính nhanh:(532x7-266x14)x(143x101-143)

Answer 1

\(\text{(532.7-266.14).(143.101-143)}\)

\(\text{=(532.7-266.7.2).(143.101-143.1)}\)

\(\text{=(532.7-532.7).(143.100)}\)

\(\text{=0.(143.100)=0}\)

Answer 2

(532 x 7 - 266 x 14) x (143 x 101 - 143)

= (532 x 7 - 266 x 2 x 7) x [143 x (101 - 1)]

= (532 x 7 - 532 x 7) x 143 x 100

= 0 x 143 x 100

= 0