Question

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

Answer 1

Step-by-step explanation:

x+y+z=0

x+y=-z &

x=-(y+z)

y=-(z+x)

so,x²+xy+y²=(x+y)²-xy

=(-z)²-{-(y+z)}{-(z+x)}

=z²-(y+z)(z+x)

=z²-(yz+xy+z²+zx)

=z²-yz-xy-z²-zx

=-(xy+yz+zx)

Answer 2

Answer:

pad

Step-by-step explanation:

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