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Math Help - How would you solve #2 on this practice exam

  1. #1
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    How would you solve #2 on this practice exam

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  2. #2
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    Re: How would you solve #2 on this practice exam

    a)
    Find common denominator, multiply both sides by denominator. Solve basic equation for x. The answer is 1/2 if you need a reference.

    b)
    Add 5 to both sides, square both sides, add 4 to both sides, take square root.
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  3. #3
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    Re: How would you solve #2 on this practice exam

    2. c) is a quadratic equation if you let \displaystyle \begin{align*} x = s^2 \end{align*}, giving \displaystyle \begin{align*} x^2 + 3x - 6 = 0 \end{align*}. Solve for \displaystyle \begin{align*} x \end{align*} using the Quadratic Formula, then use this to evaluate \displaystyle \begin{align*} s \end{align*}.
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