Question 191476
Perimeter = Side 1 + Side 2 + Side 3



{{{P=(2x^2+1)+(13x+4)+(x^2+3x)}}} So simply add up the three sides



{{{P=3x^2+16x+5}}} Combine like terms.



{{{P=(x+5)(3x+1)}}} Factor 



So the perimeter is {{{P=3x^2+16x+5}}} and it factors to {{{P=(x+5)(3x+1)}}}