Answer:
10
Step-by-step explanation:
We know that interior plus exterior angles add to 180.
1/5 of 180 = 36
36 degrees = exterior angles
180-36=interior angles
180-36=144
To find the number of sides of a polygon you have to do 360/exterior angles
360/36=10
x = -3/2
x = -1/2
4x^2 + 8x + 3
4x^2 + 2x + 6x + 3
2x(2x+1) + 3(2x+1)
(2x + 3) (2x + 1)
40
