初一因式分解练习题,谁好心帮我解下表示平方1.2X~-3XY-X2.(X+Y)~(X+Y)(X-Y)(X+Y)(Y+Z)3.3X(a+2b)~-6XY(a+2b)4.a(x-y)-b(X-Y)-C(Y-X)5.(b-a)~-2a+2b6.(x-y)~-m(y-x)+y-x7.x(x-y)(a-b)-y(y-x)(b-a)8.已知a+b=13,ab=40,求 b+ab~的值
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![初一因式分解练习题,谁好心帮我解下表示平方1.2X~-3XY-X2.(X+Y)~(X+Y)(X-Y)(X+Y)(Y+Z)3.3X(a+2b)~-6XY(a+2b)4.a(x-y)-b(X-Y)-C(Y-X)5.(b-a)~-2a+2b6.(x-y)~-m(y-x)+y-x7.x(x-y)(a-b)-y(y-x)(b-a)8.已知a+b=13,ab=40,求 b+ab~的值](/uploads/image/z/698804-44-4.jpg?t=%E5%88%9D%E4%B8%80%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3%E7%BB%83%E4%B9%A0%E9%A2%98%2C%E8%B0%81%E5%A5%BD%E5%BF%83%E5%B8%AE%E6%88%91%E8%A7%A3%E4%B8%8B%E8%A1%A8%E7%A4%BA%E5%B9%B3%E6%96%B91.2X%7E-3XY-X2.%28X%2BY%29%7E%28X%2BY%29%28X-Y%29%28X%2BY%29%28Y%2BZ%293.3X%28a%2B2b%29%7E-6XY%28a%2B2b%294.a%28x-y%29-b%28X-Y%29-C%28Y-X%295.%28b-a%29%7E-2a%2B2b6.%28x-y%29%7E-m%28y-x%29%2By-x7.x%28x-y%29%28a-b%29-y%28y-x%29%28b-a%298.%E5%B7%B2%E7%9F%A5a%2Bb%3D13%2Cab%3D40%2C%E6%B1%82+b%2Bab%7E%E7%9A%84%E5%80%BC)
初一因式分解练习题,谁好心帮我解下表示平方1.2X~-3XY-X2.(X+Y)~(X+Y)(X-Y)(X+Y)(Y+Z)3.3X(a+2b)~-6XY(a+2b)4.a(x-y)-b(X-Y)-C(Y-X)5.(b-a)~-2a+2b6.(x-y)~-m(y-x)+y-x7.x(x-y)(a-b)-y(y-x)(b-a)8.已知a+b=13,ab=40,求 b+ab~的值
初一因式分解练习题,谁好心帮我解下
表示平方
1.2X~-3XY-X
2.(X+Y)~(X+Y)(X-Y)(X+Y)(Y+Z)
3.3X(a+2b)~-6XY(a+2b)
4.a(x-y)-b(X-Y)-C(Y-X)
5.(b-a)~-2a+2b
6.(x-y)~-m(y-x)+y-x
7.x(x-y)(a-b)-y(y-x)(b-a)
8.已知a+b=13,ab=40,求 b+ab~的值
初一因式分解练习题,谁好心帮我解下表示平方1.2X~-3XY-X2.(X+Y)~(X+Y)(X-Y)(X+Y)(Y+Z)3.3X(a+2b)~-6XY(a+2b)4.a(x-y)-b(X-Y)-C(Y-X)5.(b-a)~-2a+2b6.(x-y)~-m(y-x)+y-x7.x(x-y)(a-b)-y(y-x)(b-a)8.已知a+b=13,ab=40,求 b+ab~的值
1、原式=3x~-3xy-x~-x=3x(x-y)-x(x+1)=x(3x-3y-x-1)=x(2x-3y-1)
3、原式=3x(a+2b)~-6xy(a+2b)=3x(a+2b)(a+2b-2y)
4、原式=(a-b+c)(x-y)
5、原式=(b-a)(b-a+2)
6、原式=(x-y)(x-y-m+1)
7、原式=(x-y)!(a-b)
8、原式=ab(a+b)=520
第2题没看懂
1、原式=3x~-3xy-x~-x=3x(x-y)-x(x+1)=x(3x-3y-x-1)=x(2x-3y-1)
3、原式=3x(a+2b)~-6xy(a+2b)=3x(a+2b)(a+2b-2y)
4、原式=(a-b+c)(x-y)
5、原式=(b-a)(b-a+2)
6、原式=(x-y)(x-y-m+1)
7、原式=(x-y)!(a-b)
8、原式=ab(a+b)=520
第2题我也没看懂