Question

X square + Y square + Z square minus x y - Y Z - z x = 0 then prove that x = y = z

Answer 1

Step-by-step explanation:

here x=5+3,y=4+4,z=2+6

than xy-yz-zx= (5+3)-(4+4)-(2+6)

xy-yz-zx= 8-8-8=0

x=y=z

hence proved