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Grade 11Algebra

if the roots of the equation x^2 +ax+b=0 are non real then show that the value of a^2 - 4b - 1 is always negative

Profile image of Gaurang Kotasthane
10 Years agoGrade 11
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1 Answer

Profile image of Gaurang Kotasthane
10 Years ago
D
a^2-4b
 
adding -1 to both sides
 
a^2-4b-1
a^2-4b-1
hence negative always
 
therefore we can conclude that the answer is negative always this is probably the correct way to answer pls approve it and thank you very mch