lovealena lovealena
  • 04-04-2020
  • Mathematics
contestada

This is confusing
(2x+y)^2−(x−2y)^2

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xItzSmartyGirlx
xItzSmartyGirlx xItzSmartyGirlx
  • 04-04-2020

Answer:

[tex] {(2x + y)}^{2} - {(x - 2y)}^{2} [/tex]

[tex] < {(x + y)}^{2} = {x}^{2} + 2xy + {y}^{2} > [/tex]

[tex] < {(x - y)}^{2} = {x}^{2} - 2xy + {y}^{2} > [/tex]

[tex] {(2x)}^{2} + 2(2x)(y) + {(y)}^{2} - {(x)}^{2} - 2(x)(2y) + {(2y)}^{2} [/tex]

[tex] {4x}^{2} + 4xy + {y}^{2} - {x}^{2} - 4xy + {4y}^{2} [/tex]

[tex] {4x}^{2} - {x}^{2} + {4y}^{2} + {y}^{2} [/tex]

[tex] = {3x}^{2} + {5y}^{2} [/tex]

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TheAnimeGirl
TheAnimeGirl TheAnimeGirl
  • 04-04-2020

Hope this will help u...

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