A) ab(,a+b)
B) \[{{a}^{2}}+{{b}^{2}}\]
C) \[\frac{{{a}^{3}}+{{b}^{3}}}{ab}\]
D) none of these
Correct Answer: B
Solution :
[b] \[{{(px-qy)}^{2}}+{{\left( qx+py \right)}^{2}}=\text{ }{{a}^{2}}+{{b}^{2}}\] \[\Rightarrow \left( {{p}^{2}}+{{q}^{2}} \right)\left( {{x}^{2}}+{{y}^{2}} \right)={{a}^{2}}+{{b}^{2}}\] \[\Rightarrow {{p}^{2}}+{{q}^{2}}={{a}^{2}}+{{b}^{2}}.\]You need to login to perform this action.
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