1.

If `4a^2+c^2=b^2-4a c ,`then the variable line `a x+b y+c=0`always passes through two fixed points. The coordinates of the fixedpoints can be`(-2,-1)`(b) `(2,-1)``(-2,1)`(d) `(2,1)`A. `(-2,-1)`B. `(2,-1)`C. `(-2,1)`D. `(2,1)`

Answer» Correct Answer - A


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