Question

L.C.M OF a²+b² AND a^4-b^4 IS: 1) a²+b² 2) a²-b² 3) a^4+b^4 4) a+b

Answer 1

a^2 - b^2 = (a+b) (a+b)

a-b = (a-b)

therefore L.C.M = (a+b) (a-b) = a^2-b^2

option 2 is the correct one