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S

suzuki.yoshida

x^3 - 2x^2 -4xy^2 +x
= x( x^2 - 2x -4y^2 +1)
= x[(x^2 - 2x +1)- 4y^2]
= x[(x-1)^2 - 4y^2]
= x(x -1 -2y) (x-1+2y)
 
H

hohoo

$x^3 - 2x^2 -4xy^2 +x = x( x^2 - 2x -4y^2 +1) = x[(x^2 - 2x +1)- 4y^2] = x[(x-1)^2 - 4y^2] = x(x-2y-1) (x+2y-1)$
 
C

cantien98

<=> x.( [TEX]x^2 [/TEX] -2x - [TEX]4.y^2[/TEX] +1 ) = 0
<=> x [ ( [TEX](x-1)^2 -4.y^2)[/TEX] =0
<=>x.(x-2y-1).(x+2y-1)=0
 
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