The answer for number 16 is 20
Given:
The equation is:

Find-:
Binomials factor of the equation
Explanation-:
The quadratic equation,

Solve for factor

Then the factor is:

So, the factor is x + 4
#3
2 and three are supplementary angles .
#4.
The answer is opposite angles .
#5
Bisected angles are equal





Now
m<ABC




