Please check the expressions that represent a perfect square trinomial.

Given :-
Answer :-
As we know that the general form is ,
[tex]\sf\longrightarrow[/tex] p(x) = ax² + bx + c .
So from the given options , the equations which are perfect square is ,
[tex]\sf\longrightarrow[/tex] x² - 2xy + y² = ( x-y)²
And ,
[tex]\sf\longrightarrow[/tex] x² + 2xy + y² = ( x+ y)²
This is our required answer .