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4.2 Expansion Using Algebraic Identities

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  • (2x+1)^2
    4x^2+4x+1
  • (x+7)^2
    x^2+14x+49
  • 302×298
    90000-4=89996
  • (3a-2b)^2
    9a^2-12ab+4b^2
  • (p-4)^2
    p^2-8p+16
  • (5a+2b)(5a-2b)
    25a^2-4b^2
  • (x-6)^2
    x^2-12x+36
  • (2x+3y)(2x-3y)
    4x^2-9y^2
  • (x+5)(x-5)
    x^2-25
  • 199^2
    39601
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