1.

If  \[{{x}^{2}}+{{y}^{2}}=29\] and \[xy=2\], find the value of (i) \[x+y\]        (ii) \[xy\]           (iii) \[{{x}^{4}}+{{y}^{4}}\]

A. (i) (ii) (iii)  \[\pm \sqrt{35}\] \[\pm 6\] 849
B. (i) (ii) (iii)  \[\pm \sqrt{23}\] \[\pm 5\] 833
C. (i) (ii) (iii)  \[\pm \sqrt{33}\] \[\pm 5\] 833
D. (i) (ii) (iii)  \[\pm \sqrt{29}\] \[\pm 3\] 849
Answer» D. (i) (ii) (iii)  \[\pm \sqrt{29}\] \[\pm 3\] 849


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