a-1a=3 হলে a2-1a2=?
x + y = 2, x2 +y2 = 4 হলে x3+y3=?
Two pipes A and B can fill a tank in 20 hours and 30 hours respectively. Both the pipes are opened to fill the tank but when the tank is 13 full, a leak develops in the tank through which 13 water supplied by both the pipes goes out. How much time will the tank take to be full?
x4-6x2+1
p2-14