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MonekaWilliams

  • 2 years ago

3x^4-75x^2=0

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  1. sritama
    • 2 years ago
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    \[\left( x^4-25x^2 \right)=0\]

  2. MonekaWilliams
    • 2 years ago
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    Where did the 3 go?

  3. sritama
    • 2 years ago
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    \[x^2\left( x^2-25 \right)=0\]

  4. sritama
    • 2 years ago
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    you can take it out as 3 is a common factor

  5. MonekaWilliams
    • 2 years ago
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    Oh okay I see

  6. sritama
    • 2 years ago
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    okay,so you can get x=0,5 and -5

  7. MonekaWilliams
    • 2 years ago
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    Because 3 is a common factor?

  8. sritama
    • 2 years ago
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    as 3 is a common factor,you can take it out. after that, we are getting \[x^2\left( x^2-25 \right)=0\]

  9. sritama
    • 2 years ago
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    so,either x=0 or \[x^2=25\]

  10. MonekaWilliams
    • 2 years ago
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    Okay Thanks Im preparing for finals tomorrow morning

  11. sritama
    • 2 years ago
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    okay,best of luck :)

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