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anonymous

  • 4 years ago

can someone help in solving for t? t^6+4t^3=45 ......i got 5 and -9 as my answer but when i put it as my answer its saying its wrong :(

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  1. anonymous
    • 4 years ago
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    you should have \[t^3=9\] or \[t^3=-3\]

  2. anonymous
    • 4 years ago
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    can you show me the steps you took to get to this please?

  3. anonymous
    • 4 years ago
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    wait its saying those answers are wrong too...

  4. anonymous
    • 4 years ago
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    ok maybe that was wrong. lets start at the beginning. first write \[t^6+4t^3-45=0\] then factor as \[(t^3+9)(t^3-5)=0\] so \[t^3=-9\] or \[t^3=5\] and therefore \[t=\sqrt[3]{-9}\] or \[t=\sqrt[3]{5}\]

  5. anonymous
    • 4 years ago
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    thank you both!

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