Answer:
U = 67.6 degrees
Step-by-step explanation:
Since this is a right triangle, we can use trig functions
cos U = adj side / hypotenuse
cos U = sqrt(10)/ sqrt(69)
cos U = sqrt(10/69)
Taking the inverse cos of each side
cos ^-1( cos U) = cos ^-1(sqrt(10/69))
U = 67.62335
To the nearest tenth
U = 67.6 degrees
V= (4x2) x (2x) x (2x^2+x +7)
8 (2x) (2x^2+x+7)
V= 32x^3 +16x ^2 +112 x
You can also factor out an x and a 16