Find the value of b for which the given equation is exact, and then solve it using that value of b.
(xy²−bx²y)−(x−y)x²y=0
a) b=−1, Solution: x=0,y=0
b) b=1, Solution: x=0,y=0
c) b=2, Solution: x=0,y=0
d) b=−2, Solution: x=0,y=0