Question

. If x + y + z = 0, then (x2 + xy + y2)
= ?​

Answer 1

$\huge \mathfrak \red{Äñswêr}$

Step-by-step explanation:

=x+y+z=0

⇒x+y=−z

$= {x}^{2} +xy+ {y}^{2} = {x}^{2} +2xy+ {y}^{2} −xy$

$We \: know  \: {x}^{2} +2xy+ {y}^{2} =(x+y)^{2}$

$=(x+y)^{2} −xy$

=(-z)^2- xy = z^2-xy

$\blue{i \: hope \: it \: helpfull \: for \: you}$