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Remarkable Identities

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  • (10y+2)^2=
    100y^2 -40y +4
  • (8x-3)(x+2)=
    8x^2 +13x -6
  • (2x+4)^2=
    4x^2 +16x +16
  • (3x-5)^2=
    9x^2 -30x +25
  • (3x-3)^2=
    9x^2 -18x +9
  • (x-1)^2=
    x^2 -2x +1
  • (2x-5)(2x+5)=
    4x^2 -25
  • (x+7)^2=
    x^2 +14x +49
  • (2x+1)(3x-1)=
    6x^2 +x -1
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