Question

142 - [ 50 - ( 2 mũ 3 . 10 - 2.5 ) ]

Answer 1

\(142-\left[50-\left(2^3.10-2.5\right)\right]\)

= \(142-\left[50-\left(80-10\right)\right]\)

= \(142-\left(50-70\right)\)

= \(142-\left(-20\right)\)

= \(162\)

Answer 2

\(142-\left[50-\left(2^3\cdot10-2\cdot5\right)\right]\)

\(=142-50+80+10\)

\(=72+90\)

=162