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Snegovaja2014
@Snegovaja2014
July 2022
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Помогите очень нужно))
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angelinasagaldi
1)
(х+у)^2-(x-y)^2
=
x^2+2xy+y^2-x^2+2xy-y^2
=
4xy
(x-y)(x+y) (x-y)(x+y) (x-y)(x+y)
2)
4xy
=
x^2y^2
=
4x^2y^2
(x-y)(x+y) xy (x^2-y^2)
0 votes
Thanks 1
Snegovaja2014
а что обозначает ^ ?
angelinasagaldi
степень
angelinasagaldi
ой,ну что в квадрате
Snegovaja2014
спасибо))очень выручила:))
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Answers & Comments
(x-y)(x+y) (x-y)(x+y) (x-y)(x+y)
2) 4xy = x^2y^2 = 4x^2y^2
(x-y)(x+y) xy (x^2-y^2)