If a + b = 2 and a - b = 2 then value of a² + b² is _____?
- 4
- 2
- 3
- None of these
Explanation
a + b = 2 ... (1)
a - b = 2 ... (2)
Adding (1) and (2):
2a = 4
a = 2
Put a = 2 in (1):
2 + b = 2
b = 0
Now, a² + b² = (2)² + (0)² = 4 + 0 = 4.
Related MCQs
- 25
- 30
- 35
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- 10x = - 3
- 2x = - 27
- 2x = 27
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- 1, 4, -21
- 1, 4, 21
- -1, 4, -21
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- 2/x + 12/(x +5)
- 3/x + 22/(x +5)
- 4/x + 16/(x +5)
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Leave a Reply
Your email address will not be published. Required fields are marked *
