(3x+1)^2-9 (x-1)(x+1)=0

Question

(3x+1)^2-9 (x-1)(x+1)=0

Answer 1

(3x+1)^2-9(X-1)(X+1)=0 9x^2+6x+1-9(x^2-1)=0 9x^2+6x+1-9X^2+9=0 6x+10=0 6x=-10 X=-10/6=-5/3