化简代数式(x-3)(x+3)-(x-1)(x+1)

来源:学生作业学帮网 编辑:学帮网 时间:2024/06/10 11:19:45

化简代数式(x-3)(x+3)-(x-1)(x+1)

(x-3)(x+3)-(x-1)(x+1)
=x^2-9-(x^2-1)
=x^2-9-x^2+1
=-8

(x-3)(x+3)-(x-1)(x+1)
=x²-9-x²+1
=-8