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Factorise: -1 x ^2 y ^2+ x ^4-2 y ^4
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5 votes
Factorise: -1x^2y^2+x^4-2y^4

User AticusFinch
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2 Answers

5 votes
-x^2y^2(1-x^2+2y^2)

hope this helps
User Scubabuddha
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3 votes

x^(4)-x^(2)y^(2)-2y^(4)

=x^(4)-2x^(2)y^(2)+x^(2)y^(2)-2y^(4)

=x^(2)(x^(2)-2y^(2))+y^(2)(x^(2)-2y^(2))

=(x^(2)-2y^(2))(x^(2)+y^(2))

User DDiamond
by
7.3k points
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