Question

Tính nhanh

A. ( -67) . ( 1-301) - 301. 67

Ai đúng mik sẽ tick nha

 

Answer 1

-67.(1 - 301) - 301.67

= -67.(-300) - 301.67

= 67.300 - 301.67

= 67(300 - 301)

= 67.(-1)

= -67

Answer 2

\(\left(-67\right)\left(1-301\right)-301\cdot67\)

\(=\left(-67\right)\left(-300\right)-301\cdot67\)

\(=67\cdot300-301\cdot67\)

\(=67\left(300-301\right)\)

\(=67\cdot\left(-1\right)\)

\(=-67\)