Discuss Forum
1.
x2+y2=18এবং xy=6 (x−y)2এর মান কত ?
- A. 4
- B. 4
- C. 4
- D. 4
Answer: Option B
Explanation:
(x - y)^2 = x^2 - 2xy + y^2
= x^2 + y^2 - 2xy
= 18 - 2.6
= 18 - 12
= 6
Post your comments here:
1.
Answer: Option B
Explanation:
(x - y)^2 = x^2 - 2xy + y^2
= x^2 + y^2 - 2xy
= 18 - 2.6
= 18 - 12
= 6
Post your comments here: