谢谢(关于因式分解)2x²+xy-y²-4x+5y-6x²-2x-14(x-y+1)+y(y-2x)3x²+5xy-2y²+x+9y-4x³-3x²+4
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![谢谢(关于因式分解)2x²+xy-y²-4x+5y-6x²-2x-14(x-y+1)+y(y-2x)3x²+5xy-2y²+x+9y-4x³-3x²+4](/uploads/image/z/2981897-17-7.jpg?t=%E8%B0%A2%E8%B0%A2%EF%BC%88%E5%85%B3%E4%BA%8E%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3%EF%BC%892x%26%23178%3B%2Bxy-y%26%23178%3B-4x%2B5y-6x%26%23178%3B-2x-14%28x-y%2B1%29%2By%28y-2x%293x%26%23178%3B%2B5xy-2y%26%23178%3B%2Bx%2B9y-4x%26%23179%3B-3x%26%23178%3B%2B4)
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谢谢(关于因式分解)2x²+xy-y²-4x+5y-6x²-2x-14(x-y+1)+y(y-2x)3x²+5xy-2y²+x+9y-4x³-3x²+4
谢谢(关于因式分解)
2x²+xy-y²-4x+5y-6
x²-2x-1
4(x-y+1)+y(y-2x)
3x²+5xy-2y²+x+9y-4
x³-3x²+4
谢谢(关于因式分解)2x²+xy-y²-4x+5y-6x²-2x-14(x-y+1)+y(y-2x)3x²+5xy-2y²+x+9y-4x³-3x²+4
2x²+xy-y²-4x+5y-6=(2x-y)(x+y)-4x+5y-6=(2x-y+2)(x+y-3)
x²-2x-1=(x-1)²-2=(x-1-√2)(x-1+√2)
4(x-y+1)+y(y-2x)=y²-4y+4+4x-2xy=(y-2)²+2x(y-2)=(2x+y-2)*(y-2)
3x²+5xy-2y²+x+9y-4=(3x-y)(x+2y)+x+9y-4=(3x-y+4)(x+2y-1)
x³-3x²+4=(x+1)(x²-4x+4)=(x+1)(x-2)²
问几道题 1. 1/4x五y-1/4xy五 五这个是5次方的意思 2. 4a二b二问几道题 1. 1/4x^5y-1/4xy^5 =1/4xy(x^4-y^4) =1/4xy(x