If the roots of (a^2+b^2 )x^2-2(bc+ad)x+c^2+d^2=0 are equal, then

JEE Main Mathematics question

If the roots of are equal, then

Answer: (C)

Equal roots need . Since \left(a^2+b^2\right)\left(c^2+d^2\right)=(ac-bd)^2+(ad+bc)^2, the condition becomes , i.e.

Create a free account to read the complete working, and practise questions like this in a timed test.

Question ID VK-013701