x² - xy + y² when x = -2, y = 2 value of expression is _____?
- 13
- -12
- 12
- None of these
Explanation
x² - xy + y²
= (-2)² - (-2)(2) + (2)²
= 4 + 4 + 4
= 12
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- 10 and 30
- 15 and 25
- 20 and 20
- 12 and 28
اس سوال کو وضاحت کے ساتھ پڑھیں
- (t² + 4)(t - 2)(t - 2)
- (t² - 4)(t² - 4)
- (t² + 4)(t + 2)(t - 2)
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- +4
- -4
- +16
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
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