Question

x²+y²+z²/4-2xy-2yz-2xz​

Answer 1

Answer: x2+y2+z2/ 4-2xy-2yz-2xz

x2 cuts x of -2xy and -2xz

so got -2y and -2z

y2 cuts y of -2y and -2yz

so got -2 and -2z

z2 cuts z of -2z and -2z

so got -2 and -2

so got all of this questions x2+y2+z2/4-2xy-2yz-2xz

answer is 4-2-2-2 so one -2 cuts +4 so got 2

2-2-2 so one -2 cuts +2 so got 0

so answer is 0.