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If x = √3 − 1 and y = √3 + 1 , then the value of x2 + y2 is √3 √3 y x
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- √3
- 3√3
- 16√3
- 2√3
Correct Option: B
x = √3 − | |
√3 |
y = √3 + | |
√3 |
x + y = √3 − | + √3 + | = 2√3 | ||
√3 | √3 |
xy = | ![]() | √3 − | ![]() | ![]() | √3 + | ![]() | ||
√3 | √3 |
= 3 – | = | = | |||
3 | 3 | 3 |
∴ | + | = | |||
y | x | xy |
= | |
xy |
= | (2√3)3 − 3 × | (2√3) | |||
3 | |||||
3 |
= | |
8/3 |
= | = 3√3 | |
8 |