21
Idk it is not a question
Answer:
(f+g)(x)=2x+1+5 - x
(f+g)(x)=x + 6
(f - g)(x)= 2x + 1 - (5- x )
(f - g)(x)= 3x - 4
x=7
Step-by-step explanation:
by pythagoras, 25^2=24^2+x^2
solve for x
