x - y = 10 এবং xy = 30 হলে x3-y3 এর মান কত?
x - y = 10 এবং xy = 30 হলে x3-y3 এর মান কত? Correct Answer 1900
x3-y3 = (x-y)3 + 3xy(x-y)x3-y3 = (10)3 + 3×30×10x3-y3 = 1000 + 900x3-y3 = 1900x - y = 10 এবং xy = 30 হলে x3-y3 এর মান কত? Correct Answer 1900
x3-y3 = (x-y)3 + 3xy(x-y)x3-y3 = (10)3 + 3×30×10x3-y3 = 1000 + 900x3-y3 = 1900