Bài 1:
a) Ta có: \(16\cdot\left(38-2\right)-38\cdot\left(16-1\right)\)
\(=16\cdot38-38\cdot16-16\cdot2+38\cdot1\)
\(=-32+38=6\)
b) Ta có: \(\left(-41\right)\cdot\left(58+2\right)+58\left(41-2\right)\)
\(=-41\cdot58-41\cdot2+58\cdot41-58\cdot2\)
\(=-2\cdot\left(41+58\right)=-2\cdot99=-198\)