Each Interior Angle = 180 - (360 / number of sides)
# of sides = -360 / (Each Interior Angle -180)
# of sides = -360 / (144 -180)
# of sides = -360 / -36
# of sides = 10
First add 14+2 so you have sqrt(x) +14=x. Next subtract the 14 to the other side and square both sides, so you have x=x^2+28x+196. Now subtract the x, then use quadratic formula to get the two solutions for the way you have the question typed. However, since I recognize this as being a test question from your FLVS course that is not typed correctly with the parenthesis that will give you the wrong answer. A better idea would be to review through the examples in the lesson, try a few practice problems, then you can easily solve by isolating the square root on one side by itself, then squaring both sides.
Answer:
Step-by-step explanation:
Add 
on both sides and subtract 
on both sides.
Solve the fractions.
Multiply by the reciprocal of the fraction with the variable to isolate the variable. The reciprocal is the inverted fraction.
1/11 is half of 2/11. (1/11 + 1/11 = 2/11)
As 2/11 = 0.18, 1/11 must equal half of 0.18.
Half of 0.18 is 0.09. Thus the decimal for 1/11 is 0.09.
