CAT DILR Questions | CAT Data Sufficiency questions
Comprehension
Directions for Questions: These questions are based on the information given below.
In each question, you are given certain data followed by two statements. For answering the questions ,
CAT/1996
Question . 94
If α, β are the roots of the equation (ax² + bx + c = 0), then what is the value of (α² + β²)?
(i) α + β = (b / a)
(i) 2αβ = (c/a)
A : Mark (a), if even both the statements together are insufficient to answer the question.B : Mark (b), if any one of the two statements is sufficient to answer the question.C : Mark (c), if each statement alone is sufficient to answer the question.D : Mark (d), if both the statements together are sufficient to answer the question, but neither statement alone is sufficient.
View Answer Explanatory Answer
Method of solving this CAT DILR Question from Data Sufficiency question
(a) The statements that are given hold good for any quadratic equation of the given form. From the given statements, the value of α² + β² can be expressed in terms of a and b.