Question

if x is equal to C Y + B Z and Y is equal to c x + A Z and Z is equal to b x + a y the then the value of a square + b square + c square - 1 is ...​

Answer 1

Answer:

-2abc

Step-by-step explanation:

x=cy+bz

by substituting all

we get

x[a^2+b^2+c^2+2abc]=x

a^2+b^2+c^2+2abc=1

a^2+b^2+c^2-1=-2abc