初二数题(1)5x(x^2-2x-4)+x^2(x-1)还有(2ax)^2•(-2\5a^4x^3y^3)\(-1\2a^5xy^2)
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/07 15:54:39
![初二数题(1)5x(x^2-2x-4)+x^2(x-1)还有(2ax)^2•(-2\5a^4x^3y^3)\(-1\2a^5xy^2)](/uploads/image/z/12536535-39-5.jpg?t=%E5%88%9D%E4%BA%8C%E6%95%B0%E9%A2%98%EF%BC%881%EF%BC%895x%EF%BC%88x%5E2-2x-4%EF%BC%89%2Bx%5E2%EF%BC%88x-1%EF%BC%89%E8%BF%98%E6%9C%89%EF%BC%882ax%EF%BC%89%5E2%26%238226%3B%EF%BC%88-2%5C5a%5E4x%5E3y%5E3%EF%BC%89%5C%EF%BC%88-1%5C2a%5E5xy%5E2%EF%BC%89)
x){1ɮgS7\4{:M+8#]
] _$_lN'kTgladdf
51M333ŀcL+*AFt$l#XeW_,_M+4*Ԕ
-ijCy@4*lMBֺp0QD\!Z<;gm
初二数题(1)5x(x^2-2x-4)+x^2(x-1)还有(2ax)^2•(-2\5a^4x^3y^3)\(-1\2a^5xy^2)
初二数题(1)5x(x^2-2x-4)+x^2(x-1)
还有(2ax)^2•(-2\5a^4x^3y^3)\(-1\2a^5xy^2)
初二数题(1)5x(x^2-2x-4)+x^2(x-1)还有(2ax)^2•(-2\5a^4x^3y^3)\(-1\2a^5xy^2)
解
5x(x²-2x-4)+x²(x-1)
=5x³-10x²-20x+x³-x²
=6x³-11x²-20x
1)5x(x^2-2x-4)+x^2(x-1)
=5x³-10x²-20x+x³-x²
=6x³-11x²-20x