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ANTAS GUPTA

CAT Preparation Community 5y ago

In dashcat 17, Q47 which is as follows: Minimum difference b/w 2 integers p & q (p>q) , equation ((q^2)+12p-3)>0 is positive? Why, in the video solution Discriminant (D) is taken as <0 (less than 0). Can you please explain??

2

Pratik Pushp 5y ago

When any quadratic equation is greater than zero, its discriminant have to be less than zero and if any quadratic equation is less than zero,its discriminant is greater than zero. Just remember this. Apply everywhere if need.

JAY KHANDELWAL 5y ago

Can you please tell me that in dashcat 17, q 54, how can be p + q =2 and pq = 2 is possible ?

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