For what value of \( k \) is \( 4 x^{2}+8 x y+k y^{2}=9 \) the equation of a pair of straight lines VIDEO
For what value of \( k \) is \( 4 x^{2}+8 x y+k y^{2}=9 \) the equation of a pair of straight lineshttps://bit.ly/YTAI_PWAP https://www.pw.live
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