5x(5x-1)-(5x+3)=x-3 (8x+1)(2x-3)-1=(4x-2)^2
25x^2-5x-5x-3=x-3 25x^2-5x-5x-x=-3+3 25x^2-11x=0 x(25x-11)=0 x=0 25x-11=0 25x=11 x=11/25 x=0,44 16x^2-24x-2x-3=16x^2-16x+4 16x^2-24x-2x-16x^2+16x=3+4 -26x=7 x=-7/26