a = 122*
The three angles added together form a circle or 360*.
Set a + b + c = 360 and solve for a
a + 66 + 172 = 360
Subtract 238 from both sides to get a
(f - g)(x) = 5x^3 - 3
step-by-step explanation:
rearrange these functions vertically, with like terms in separate columns:
f(x) = 5x^3 - 2
g(x) = +1
now subtract, column by column:
7