As you can see in the picture , two equations have been combined using the symbol lambda 1.Using what logic has that been done?2. Can we use the same logic too solve all types of equations?

As you can see in the picture , two equations have been combined using the symbol lambda 1.Using what logic has that been done?2. Can we use the same logic too solve all types of equations? S the Set a" gossible values of parameter a • fcy which the purrs intersectur ct parab&as Sax ar•d y — ( x: • ax 5 are curycbc_ Ttpn S contaaas jrrervaj(s) F of curves passing the pents ot intersection of parabolas is represents a circle it A it rv-vvosonts a mai circle if a: 1 — S O a: • a -2) e (2. x). Hence (A1 and (O) are the correct answers.