Question

Find the quotient of 21 x squared y minus 15 x y squared plus 9 x y all over 3 x y

Answer 1

For 12x^2y/ 3xy

21/3 =7
x^2 -x^1 =x
y-y =0
Which gives: 7x

For -15xy^2/3xy
-15/3 = -5
x-x=0
y^2-y =1
Which gives: -5y

For 9xy/3xy
9/3=3
xy-xy=0
Which gives: 3

Answer: 7x-5y +3