[" 22.The possible value of "lambda" for...

[" 22.The possible value of "lambda" for which the following three "],[" lines "],[qquad x+y=1,lambda x+2y=3,lambda^(2)x+4y+9=0],[" are concurrent is "],[[" (1) "2," (2) "14],[" (3) "-15," (4) "-13]]

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