A) \[5\sqrt{2}\]
B) \[10\sqrt{2}\]
C) 20
D) 5
Correct Answer: D
Solution :
[d] \[{{\left( x+y \right)}^{2}}+{{\left( x-y \right)}^{2}}=2\left( {{x}^{2}}+{{y}^{2}} \right)\text{ }and\text{ }{{\left( x+y \right)}^{2}}\] \[-{{\left( x-y \right)}^{2}}=4xy\] \[=\left[ {{(\sqrt{3})}^{2}}+{{(\sqrt{2})}^{2}} \right]\times \left[ {{(\sqrt{3})}^{2}}-{{(\sqrt{2})}^{2}} \right]\] \[=5\times 1=5\]You need to login to perform this action.
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