যদি x - y = 8 এবং xy = 5 হয়, তবে x3 - y3 + 8(x + y)2 এর মান কত?

A 1308

B 1258

C 1304

D 1348

Solution

Correct Answer: Option C

x3 - y3 + 8(x + y)2
= (x - y)3 + 3xy (x - y) + 8{(x - y)2 +4xy}
= (8)3 + 3 × 5 × 8 + 8(82 + 4 × 5)
= 1304

Practice More Questions on Our App!

Download our app for free and access thousands of MCQ questions with detailed solutions