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Grade 11Algebra

Please solve this questionCorrect Answer is D option

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Profile image of Rishabj
8 Years agoGrade 11
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1 Answer

Profile image of Arun
8 Years ago
(1 +a + a^2) (1 + b +b^2)
 = 1 + a +a^2 + b + ab + a^2 b + b^2 + b^2 a + a^2 b^2
 = 1 + (a +b)  + ab(a + b) + a^2 +b^2 + ab + (ab)^2
 
Now
 
a + b = sum of roots = –B/A
ab = product of roots = C/A
 
 put these value and find your answer.
 
Regards
Arun (askIITians forum expert)