Question

(x+y)whole power 2=xsquare+2xy+ysquare

Answer 1

what you have written is correct.
${(x + y)}^{2} = {x }^{2} + 2xy + {y}^{2}$

Answer 2

hey mate here is your answer. ...
${(x + y) }^{2} = {x}^{2} + {y }^{2} + 2xy$
hope this helps