SAT Subject Test Mathematics Level 2

Evaluate    both    the positive    and negative    square  roots:

Since   k   <   −1  in  this    problem,    use −3.581  for your    answer.

8 . E
First multiply both sides by n − 3p to clear the denominator:

Now move    all terms   with    p   to  the left    and all terms   without p to    the right:

ns  −   3ps =   n^2     +   p

−3ps    −   p   =   n^2     −   ns

Now factor  the left    side    and divide  to  isolate p.