Answer:

Step-by-step explanation:
The exterior angle in a triangle is equal to the sum of the interior opposite angles in a triangle
Therefore,

Now solve for x

Now let's solve for the exterior angle

Hope this helps you.
Let me know if you have any other questions :-)
14 - 16 is -2.
Hope this helped.
Answer:
x^4 -x^3 -4x^2-3
Step-by-step explanation:
f(x)=x^4−x^2+9
g(x)=x^3+3x^2+12
(f−g)(x)= x^4−x^2+9 - (x^3+3x^2+12)
Distribute the minus sign
(f−g)(x)= x^4−x^2+9 - x^3-3x^2-12
I like to line them up vertically
x^4 −x^2+9
- x^3 -3x^2-12
---------------------------
x^4 -x^3 -4x^2-3
If you are looking to solve for x, use the distributive property to expand the inequality and then combine like terms. Once you are able to, isolate x and solve
