Question

(X-1)(x+1)=x (x+3) помогите пожалуйста

Answer 1

$(x - 1)(x + 1) = x(x + 3) \ {x}^{2} - 1 = {x}^{2} + 3x \ - 1 = 3x \ x = - 1 div 3 \ x = - frac{ 1}{3}$