You just multiply the x value by 5
-2(5)=-10
-1(5)=-5
0(5)=0
3(5)=15
6(5)=30
9(5)=45
We are asked to sum the two trinomials

. We can start by using the distributive property to remove the parenthesis, giving us

. Next, when we combine like terms, we get

. Hope this helped!
X= -14/13
Solve for X by simplifying both sides of the equation, the isolating the variable.
I hope this helps.
The answer is 0 because 180 degrees does not make a valid statement