please po need lg ng help

Answer:
√121 =11
√196 = 14
√m²y² = my
√k²j² = kj
√169x²y² = 13xy
Checking:
11² = 11(11) =121
14² = 14(14) = 196
(my)² = m²y²
(kj)² = k²j²
(13xy)² = 169x²y²