AP EAMCET · Maths · Quadratic Equation
If are the roots of , then ? (approximately close to)
- A
- B
- C
- D
Answer & Solution
Correct Answer
(C)
Step-by-step Solution
Detailed explanation
Given, 11x2+12x-13=0 Then, α+β=-1211 and αβ=-1311 Now, 1α2+1β2=α2+β2α2β2 =α+β2-2αβαβ2 Putting the values we get, =-12112-2-1311-13112 =1.19+2.361.39 ≈2.54
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