Answer:
x = 13
Step-by-step explanation:
isosceles trapezoid
x^2 - 5 + x + 3 = 180
x^2 + x - 2 = 180
x^2 + x - 182 = 0
(x + 14)(x - 13) = 0
x + 14 = 0 ; x = -14
x -13 = 0; x = 13
Angle can't be negative so answer is x = 13
