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shaqadry Group Title

expand (2x+1)^3

  • one year ago
  • one year ago

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  1. ParthKohli Group Title
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    Would you like to use the Binomial Theorem here?

    • one year ago
  2. UnkleRhaukus Group Title
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    \[(2x+1)^3=(2x+1)(2x+1)(2x+1)\]

    • one year ago
  3. ParthKohli Group Title
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    \[1(2x)^3(1)^0 +3(2x)^2(1)^1 + 3(2x)^1(1)^2 + 1(2x)^0(1)^3 \]

    • one year ago
  4. ParthKohli Group Title
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    @UnkleRhaukus is right, but who'd like to multiply that much? :P

    • one year ago
  5. UnkleRhaukus Group Title
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    \[=(4x^2+4x+1)(2x+1)\]

    • one year ago
  6. ParthKohli Group Title
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    \[\implies 2x(4x^2 + 4x + 1) + 1(4x^2 + 4x + 1)\]

    • one year ago
  7. UnkleRhaukus Group Title
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    easy

    • one year ago
  8. mayankdevnani Group Title
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    \[(2x +1)^3\]=\[(2x)^3+(1)^3+3xy(2x+1)\]

    • one year ago
  9. mayankdevnani Group Title
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    and then solve it @shaqadry

    • one year ago
  10. Yahoo! Group Title
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    (a+b)^3 = a^3 + 3a^2 b + 3a b^2 + b^3

    • one year ago
  11. Yahoo! Group Title
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    Or Use pascal Triangle to find its Coefficient

    • one year ago
  12. shaqadry Group Title
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    thank you everyone!

    • one year ago
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