If \(\frac{1+\sqrt{2}}{1-\sqrt{2}}\) is expressed in the form of x+y\sqrt2 find the values of x and y
A
(-3, -2)
B
(-2, 3)
C
(3,2)
D
(2,-3)
Verified Correct Answer: A.
Step-by-Step Mathematical Solution
\(\frac{1+\sqrt{2}}{1-\sqrt{2}} \times \frac{1+\sqrt{2}}{1+\sqrt{2}}\)
= \(\frac{1+(1+\sqrt{2})+\sqrt{2}(1+\sqrt{2})}{1^2 - (\sqrt{2})^2}\)
= \(\frac{(1+\sqrt{2}+\sqrt{2}+2)}{1-2}\)
= \(\frac{3+2\sqrt{2}}{-1}\)
= - 3 - 2\(\sqrt{2}\)
∴ X and Y = -3 and -2
Source: Myschool Past Questions Archive (Record #9265)