Question

6x2y (12x +7)? -9mn (-3mn + 8mn)?

Answer 1

`6x2y (12x +7)=144xy+84y`,
`-9mn (-3mn + 8mn)=-45m^2n^2`

Explanation:

`6*2y (12x +7)=12y(12x+7)=144xy+84y`
`-9mn (-3mn + 8mn)=-9mn(5mn)=-45m^2n^2`