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

2. ## 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.

3. ## 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*}.