1.2(x-5)-x^2+25=0 2.x(x+1)-x^2+1=0 3.4x^2-25+(2x+5)^2=0

1.2(x-5)-x^2+25=0 2.x(x+1)-x^2+1=0 3.4x^2-25+(2x+5)^2=0
Đăng phản hồi