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MathCrazyFool

  • 3 years ago

Simplify (2 + squareroot5)(2 - squareroot5)

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  1. sauravshakya
    • 3 years ago
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    Hint: (a+b)(a-b)=a^2 - b^2

  2. sauravshakya
    • 3 years ago
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    Does it help?

  3. MathCrazyFool
    • 3 years ago
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    2^2 - 5?

  4. sauravshakya
    • 3 years ago
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    yes

  5. MathCrazyFool
    • 3 years ago
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    Thanks so much! I wasn't even thinking this ><

  6. sauravshakya
    • 3 years ago
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    Welcome

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