Question

x+y+z=15
xy+yz+zx=72
x^{2} + y^{2} + z^{2} =81
then the value of x =?

Answer 1

Step-by-step explanation:

x+y+z=15

xy+yz+zx=72

x^{2} + y^{2} + z^{2} =81

then the value of x =?