Multiply `-4/3x^3` by `6/7x^2y` and verify your result for `x=2\ a n d\ y=1.`

Explanation

Multiplying:R.H.S

`=-4/3x^3times6/7x^2y`
`=(-4/3times6/7)times(x^3timesx^2y)`
`=-8/7x^5y`

Putting `x=2` and `y=1`.
`=-8/7x^5y`
`=-8/7times(2)^5times1`
`=-8/7times32`
`=-256/7`.L.H.S
`=-4/3x^3times6/7x^2y`
Putting `x=2` and `x=1`.
`=-4/3(2)^3times6/7(2^2times1)`
`=-32/3times24/7`
`-768/21`
Dividing numerator and denominator by `3`, we get
`-256/7`.
Thus, L.H.S`=`R.H.S.
Hence, verified.