Question

se considera E(x)=x^2+(x✓3+1)^2-(2x-1)^2-2x(✓3+2).Aratati că E(x)=0

Answer 1

E(x) = x²+3x²+2√3x+1-4x²+4x-1-2√3x-4x = 0, am evidentiat termenii care se reduc. la fel, 1 si -1 se reduc