x + y = 7 এবং xy = 12 হলে x3 + y3 এর মান কত?
Solution
Correct Answer: Option A
দেওয়া আছে, x + y = 7
এবং xy = 12
∴ x³ + y³ = (x + y)³ - 3xy(x + y)
= (7)³ - 3.12.7
= 343 - 252
= 91
এবং xy = 12
∴ x³ + y³ = (x + y)³ - 3xy(x + y)
= (7)³ - 3.12.7
= 343 - 252
= 91
Practice More Questions on Our App!
Download our app for free and access thousands of MCQ questions with detailed solutions