Let's use the quadratic formula to solve for q:
Starting with the general quadratic
the general solution using the quadratic equation is:
So lets solve  ( notice  ,  , and  )
 Plug in a=-8, b=-2, and c=1
 Negate -2 to get 2
 Square -2 to get 4 (note: remember when you square -2, you must square the negative as well. This is because  .)
 Multiply  to get 
 Combine like terms in the radicand (everything under the square root)
 Simplify the square root (note: If you need help with simplifying the square root, check out this solver)
 Multiply 2 and -8 to get -16
So now the expression breaks down into two parts
 or 
Lets look at the first part:
 Add the terms in the numerator
 Divide
So one answer is
Now lets look at the second part:
 Subtract the terms in the numerator
 Divide
So another answer is
So our solutions are:
or
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