Question

Find the missing terms such that the given polynomial become a perfect square trinomial :
_________$+4xy+4$

Answer 1

We have find the missing terms such that

_________$4xy+4$

Becomes a perfect square

It can be written as ______$+2\left(2x\right)y+2^2$

Hence missing tower should be $(xy{)}^2+\mathrm{2.2.}x.y+2^2=(xy+2{)}^2$