Find the value of `a` for which the lines represented by `a x^2+5x y+2y^2=0` are mutually perpendicular.
Find the value of `a` for which the lines represented by `a x^2+5x y+2y^2=0` are mutually perpendicular.
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The lines given by `ax^(2)+5xy+2y^(2)=0` are mutually perpendicular if `a+2=0,i.e.,a=-2`.
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