simplify (x+y+z) square-(x+y+z)square
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=x2+2xy+2xz+y2+2yz+z2+−x2+−2xy+−2xz+−y2+−2yz+−z2
Combine Like Terms:
=x²+2xy+2xz+y2+2yz+z2+−x2+−2xy+−2xz+−y2+−2yz+−z2
=(−x2+x2)+(2xy+−2xy)+(2xz+−2xz)+(y2+−y2)+(2yz+−2yz)+(z2+−z2)
Answer:
=0
Combine Like Terms:
=x²+2xy+2xz+y2+2yz+z2+−x2+−2xy+−2xz+−y2+−2yz+−z2
=(−x2+x2)+(2xy+−2xy)+(2xz+−2xz)+(y2+−y2)+(2yz+−2yz)+(z2+−z2)
Answer:
=0
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