The letter tiles shown below are in a bag. without looking i am going to draw one tile.
what are the chances of not drawing a blue a?
r=red g=green b=blue
ro, ri, rs, ga, gp, bl, ba, ba

a. 0.16
b. 0.15
c. 0.25
d. 0.75

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square