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QA Given that ax2 + bx + c = 0 has ...
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QA Given that ax2 + bx + c = 0 has no real roots and a + b + c<0, then - (A) c = 0 (B) c>0 (D) None (C)c< 0
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No heal root ( Rightarrow quad b^{2}-4 a c<0 ) [ begin{array}{l}text { And } a+b+c<0 b
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