Question

If a÷b=c÷d=e÷f prove that (i) (ab+cd+ef)^2=(a^2+c^2+e^2)(b^2+d^2+f^2) (ii) a^3+c^3+e^3÷b^3+d^3+f^3 =ace÷bdf. (take a=bk,c=dk and e=fk) give me the correct answer

Answer 1

Answer:

I explained in above pic ,if any doubt msg me