Question

rezolvarea ecuatiilor radical din x+1 = x-1

Answer 1

[tex] \sqrt{x+1}=x-1 \\ x \geq 1 \\ x+1=(x-1)^2 \\ x+1= x^{2} -2x+1 \\ x^{2} -3x=0 \\ x(x-3)=0 \\ x=0 \\ x=3 raspuns:x=3 [/tex]