Answer:
20 painters are painting the inside
Step-by-step explanation:
Perpendicular bisector because is cutting the segment in equal parts while is perpendicular to it as we’ll

Step-by-step explanation:
X+4 is prime. X2-9can be factored using the
formula

Rearrange slightly like so...
x^3-3x-5x^2+15 now factor first and second pair of terms...
x(x^2-3)-5(x^2-3)
(x-5)(x^2-3)
(x-5)(x-√3)(x+√3)