Question

expand (X/a+ y/b+z/c)²​

Answer 1

Answer:

a=−bcxcy+bz−bc.

Step-by-step explanation:

(xa)+(yb)+zc=1. multiply L.H.S. and R.H.S. by abc. ∴x(a 1bc)a 1+y(ab 1c)b 1+z(abc 1)c 1=abc. ∴bcx+acy+abz=abc.

Answer 2

Answer:

Step-by-step explanation:

x^2/a^2+y^2/b^2+z^2/c^2+2x^2*y^2/a^2*b^2+2y^2*z^2/b^2*c^2+2z^2*x^2/c^2*a^2