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Math Help - Miscellaneous questions

  1. #1
    Junior Member
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    Miscellaneous questions

    Need help on these, need explanation too please.

    1.Which of the following is equavlant to (2z^3)/(8z^(n-2))
    a. 1/4z^1-n
    b. z^5-n
    c. 1/4z^(5-n)

    2.Find the range of negative squareroot (36-x^2)
    so far I gotten (x+6)=-6 and (x-3)=6 so would it be y:y -6<y<6?

    3. Find all solutions for sin^2=3cos^2

    4. Suppose -2x+y=4 and 3x-5y=-6 whats y/x=
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by goldenroll View Post
    Need help on these, need explanation too please.

    1.Which of the following is equavlant to (2z^3)/(8z^(n-2))
    a. 1/4z^1-n
    b. z^5-n
    c 1/4z^(5-n)
    \frac{2z^3}{8z^{n-2}}=\frac{2z^{3-(n-2)}}{8}

    Simplify that and see what you get.

    Also in future use brackets to make what you type unabiguous, otherwise you are unlikely to get much help.

    CB
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