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If the equations x^2+""2x""+""3""=""0 an...

If the equations `x^2+""2x""+""3""=""0` and `a x^2+""b x""+""c""=""0,""a ,""b ,""c in R` , have a common root, then `a"":""b"":""c` is (1) 3 : 2 : 1 (2) 1 : 3 : 2 (3) 3 : 1 : 2 (4) 1 : 2 : 3

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