题型:解答题 填空:(1)已知x2=y3=z4≠0,则2x+y-z3x-2y+z=______.(2)若分式3x2-12x2+4x+4的值为0,则x的值为______.(3)已知ax+2与bx-2的和等于4xx2-4,则a=______,b=______.(4)已知x为整数,且2x+3+23-x+2x+18x2-9为整数,则所有符合条件的x值的和为______. 查看答案