poposki poposki
  • 26-03-2014
  • Mathematics
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Factorise: -1x^2y^2+x^4-2y^4

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madankapoor10
madankapoor10 madankapoor10
  • 26-03-2014
[tex]x^{4}-x^{2}y^{2}-2y^{4}[/tex]
[tex]=x^{4}-2x^{2}y^{2}+x^{2}y^{2}-2y^{4}[/tex]
[tex]=x^{2}(x^{2}-2y^{2})+y^{2}(x^{2}-2y^{2})[/tex]
[tex]=(x^{2}-2y^{2})(x^{2}+y^{2})[/tex]

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deathstrike001
deathstrike001 deathstrike001
  • 26-03-2014
-x^2y^2(1-x^2+2y^2)

hope this helps
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