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Divide: 3x^3y^2+2x^2y+15xy by 3x y ...

Divide: `3x^3y^2+2x^2y+15xy` by `3x y`
`x^2+7x+12` by `x+4`

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(i) `3x^3y^2+2x^2y+15 x y\ b y\ 3x y`
`=(3x^3y^3+2x^2y+15xy)/(3xy)`
`=(3x^3y^3)/(3xy)+(2x^2y)/(3xy)+(15xy)/(3xy)`
`=x^2y+2/3x+5`

(ii) `x^2+7x+12\ b y\ x+4`
By using long division method:
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