问题 选择题 方程-x2-3=-56+1-x3移项,得( )A.1-x3-x2=-3+56B.1-x3+x2=-3+56C.-x2-1-x3=-3+56D.x2-1-x3=-3-56 答案 移项得:-x2-1-x3=-56+3,即:x2+1-x3=-3+56.故选B.