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Anguyennn

  • one year ago

How to find x intercept for x^4-4x^2?

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  1. anonymous
    • one year ago
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    Set the y=0 So it would be \[0=x^4-4x^2\] Distribute it \[0=x^2(x^2-4)\] = \[0=x^2(x+2)(x-2)\]

  2. Anguyennn
    • one year ago
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    so would x be -2, 2 and 0?

  3. Anguyennn
    • one year ago
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    does the x^2 count

  4. anonymous
    • one year ago
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    Yes it does. Yep, you got it all correct.

  5. Anguyennn
    • one year ago
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    oh and then what about 3x^2-x-2?

  6. anonymous
    • one year ago
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    \[3x^2-x-2=(3x+2)(x-1)\]

  7. Anguyennn
    • one year ago
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    oh!!!!!

  8. Anguyennn
    • one year ago
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    wow thank you so much

  9. anonymous
    • one year ago
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    No problem! Good luck on the rest.

  10. Anguyennn
    • one year ago
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    I appreciate it :)

  11. Anguyennn
    • one year ago
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    yes thank you.

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