Question

Tính nhanh  : ( - 98 ) x ( 1- 246 ) - 246 x 98

Answer 1

( -98 ) x ( 1 - 246 ) - 246 x 98

= -98 x ( 1 - 246 + 246 )

= -98 x 1

= -98

Answer 2

\(\left(-98\right).\left(1-246\right)-246.98\)

\(=-98.\left(1-246+246\right)\)

\(=-98.1\)

\(=-98\)