数学分解因式题!(X3-4X2Y+4XY2)-X+2Y !!第二题,4m2-n2-4m+1
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解1题:原式=X(X²-4XY+4Y²)-(X-2Y)
=X(X-2Y)²-(X-2Y)
=(X-2Y)[X(X-2Y)-1]
=(X-2Y)(X²-2XY-1)
4m²-n²-4m+1
=(4m²-4m+1)-n²
=(2m-1)²-n²
=[(2m-1)+n][(2m-1)-n]
=(2m+n-1)(2m-n-1)
=X(X-2Y)²-(X-2Y)
=(X-2Y)[X(X-2Y)-1]
=(X-2Y)(X²-2XY-1)
4m²-n²-4m+1
=(4m²-4m+1)-n²
=(2m-1)²-n²
=[(2m-1)+n][(2m-1)-n]
=(2m+n-1)(2m-n-1)
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(x^3-4x^2y+4xy^2)-x+2y
= x(x^2-2xy-4y^2)-(x-2y)
=x(x-2y)^2-(x-2y)
=(x-2y)(x^2-2xy-1)
4m^2-n^2-4m+1
=4m^2-4m+1-n^2
=(2m-1)^2-n^2
=(2m-1+n)(2m-1-n)
= x(x^2-2xy-4y^2)-(x-2y)
=x(x-2y)^2-(x-2y)
=(x-2y)(x^2-2xy-1)
4m^2-n^2-4m+1
=4m^2-4m+1-n^2
=(2m-1)^2-n^2
=(2m-1+n)(2m-1-n)
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解:1、原式=x(x²-4xy+4xy)-(x-2y)
=x(x-2y)²-(x-2y)
=(x-2y)[x(x-2y)-1]
=(x-2y)(x²-2xy-1)
2、原式=(4m²-4m+1)-n²
=(2m-1)²-n²
=(2m-1+n)(2m-1-n)
=x(x-2y)²-(x-2y)
=(x-2y)[x(x-2y)-1]
=(x-2y)(x²-2xy-1)
2、原式=(4m²-4m+1)-n²
=(2m-1)²-n²
=(2m-1+n)(2m-1-n)
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1、(x^3-4x^2y+4xy^2)-x+2y
=x(x^2-4xy+4y^2)-x+2y
=x(x-2y)^2-(x-2y)
=(x-2y)(x(x-2y)-1)
=x(x^2-4xy+4y^2)-x+2y
=x(x-2y)^2-(x-2y)
=(x-2y)(x(x-2y)-1)
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