分解公因式a的2n+3次方加上a的n+2次方加上a的n+1次方也是分解-1\2 x^2 y^3减去x^2 y+2x^3 y^2 z计算:(2a-5b)(3a^2-2ab+b^2)还有1题,不知是不是出卷老师傻了:因为3xy(2x-y)=6x^2 y-3xy^2,所以因式6x^2 y-
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![分解公因式a的2n+3次方加上a的n+2次方加上a的n+1次方也是分解-1\2 x^2 y^3减去x^2 y+2x^3 y^2 z计算:(2a-5b)(3a^2-2ab+b^2)还有1题,不知是不是出卷老师傻了:因为3xy(2x-y)=6x^2 y-3xy^2,所以因式6x^2 y-](/uploads/image/z/6934736-56-6.jpg?t=%E5%88%86%E8%A7%A3%E5%85%AC%E5%9B%A0%E5%BC%8Fa%E7%9A%842n%2B3%E6%AC%A1%E6%96%B9%E5%8A%A0%E4%B8%8Aa%E7%9A%84n%2B2%E6%AC%A1%E6%96%B9%E5%8A%A0%E4%B8%8Aa%E7%9A%84n%2B1%E6%AC%A1%E6%96%B9%E4%B9%9F%E6%98%AF%E5%88%86%E8%A7%A3-1%5C2+x%5E2+y%5E3%E5%87%8F%E5%8E%BBx%5E2+y%2B2x%5E3+y%5E2+z%E8%AE%A1%E7%AE%97%EF%BC%9A%EF%BC%882a-5b%EF%BC%89%EF%BC%883a%5E2-2ab%2Bb%5E2%29%E8%BF%98%E6%9C%891%E9%A2%98%EF%BC%8C%E4%B8%8D%E7%9F%A5%E6%98%AF%E4%B8%8D%E6%98%AF%E5%87%BA%E5%8D%B7%E8%80%81%E5%B8%88%E5%82%BB%E4%BA%86%EF%BC%9A%E5%9B%A0%E4%B8%BA3xy%EF%BC%882x-y%EF%BC%89%3D6x%5E2+y-3xy%5E2%2C%E6%89%80%E4%BB%A5%E5%9B%A0%E5%BC%8F6x%5E2+y-)
分解公因式a的2n+3次方加上a的n+2次方加上a的n+1次方也是分解-1\2 x^2 y^3减去x^2 y+2x^3 y^2 z计算:(2a-5b)(3a^2-2ab+b^2)还有1题,不知是不是出卷老师傻了:因为3xy(2x-y)=6x^2 y-3xy^2,所以因式6x^2 y-
分解公因式a的2n+3次方加上a的n+2次方加上a的n+1次方
也是分解-1\2 x^2 y^3减去x^2 y+2x^3 y^2 z
计算:(2a-5b)(3a^2-2ab+b^2)
还有1题,不知是不是出卷老师傻了
:因为3xy(2x-y)=6x^2 y-3xy^2,所以因式6x^2 y-3xy^2=
分解公因式a的2n+3次方加上a的n+2次方加上a的n+1次方也是分解-1\2 x^2 y^3减去x^2 y+2x^3 y^2 z计算:(2a-5b)(3a^2-2ab+b^2)还有1题,不知是不是出卷老师傻了:因为3xy(2x-y)=6x^2 y-3xy^2,所以因式6x^2 y-
1.
a^(2n+3)+a^(n+2)+a^(n+1)
=a^(n+1)[a^(n+2)+a+1]
2.
-x^2y^3/2-x^2y+2x^3y^2z
=(-x^2y/2)(y^2+2+4xyz)
3.
(2a-5b)(3a^2-2ab+b^2)
=6a^3-4a^2b+2ab^2-15a^2b+10ab^2-4b^3
=6a^3-19a^2b+12ab^2-4b^3
4.
3xy(2x-y)=6x^2y-3xy^2=3xy(2x-y) 老师可能直接把答案写上了,
a的n+1次方*(a的n+2加上a+1)