Question

a^2+b^2+c^2+3=2(a-b-c) then 2a-b+c=?​

Answer 1

Answer:

If a, b, c are real and a^2 + b ^2 + c^2 = 2 (a-b-c) - 3, then what is the ... Expanding RHS we get a2+b2+c2+3=2a+2b+ 2c.