Question

If x+y+z=9 and xy+yz+xz=26 what is x2+y2+z2

Answer 1

Answer:

i hope you like the solution

Answer 2

Step-by-step explanation:

we know that

(x+y+z)²=x²+y²+z²+2(xy+yz+xz)

(9)²=x²+y²+z²+2(26)

81=x²+y²+z²+52

x²+y²+z²=81-52

x²+y²+z²=29