pair-st-lines

Question: Pair of straight lines perpendicular to each other represented by

1) $2{{x}^{2}}=2y(2x+y)$

2) ${{x}^{2}}+{{y}^{2}}+3=0$

3) $2{{x}^{2}}=y(2x+y)$

4) ${{x}^{2}}=2(x-y)$

Solution:

Explanation: No Explanation

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