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Let a > 0, b > 0 and c > 0. Then both the roots of the equation ax2 + bx + c = 0:(A)are real and negative(B)have negative real parts(C)have positive real parts(D)none of these

vijayalakshmi kv , 6 Years ago
Grade 11
anser 1 Answers
Agrata Singh

Last Activity: 6 Years ago

Roots of any quadratic eqn are given by
(-b+√D)/2a   and  (-b-√D)2a
where D=b2-4ac
Now no information is given to find if D is a perfect square or not. However we know b>0
Hence -b is a negative quantity 
Therefore option (B) is correct

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