1} x(2x-7)-(4x+14)=0 2} 3x-15=2x(x+5)3} (2+1)(3x-2)=(5x-8)(2x+1) 4} 0,5x(x-3)=(x-3)(1,5x-1 5} (2x^2+1)(4x-3)=(x-12)(2x^2+1)
Đăng ký qua Facebook hoặc Google: