Question

Se considera functiile f,g: R--->R , f(x)= 4x patrat-4x+1 ,g(x)= 2x-1
Sa se rezolve in R ecuatia : f(x)+2g(x)=-1

Answer 1

$f(x) + 2g(x) = - 1 \\ 4x ^{2} - 4x + 1 + 4x - 2 = - 1 \\ 4x ^{2} - 1 = - 1 \\ {4x}^{2} = 0 \\ x = 0$