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The expression ax^2+2bx+c, where 'a' is ...

The expression `ax^2+2bx+c`, where 'a' is non-zero real number, has same sign as that of 'a' for every real value of x,then roots of quadratic equation `ax^2+ (b-c) x-2b-c -a-0` are: (a) real and equal (b) real and unequal (c) non-real having positive real part(d) non-real having negative real part

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