[Yashi Karanwal]

(p²+11p+28)/(p+4)

First let us simplify the numerator

taking p²+11p+28

p²+7p+4p+28

p(p+7)+4(p+7)

(p+4)(p+7)

So the numerator can be written as (p+7)(p+4)

putting this is the question

We have ((p+7)(p+4)) / (p+4)

(p+4) gets cancelled

So we are left with p+7

Hence on simplification our answer is p+7.

[Yashi Karanwal]

Let us assume that the side of the triangle are x,2x,3x.

As the perimeter is given to be 36 so we can write

x+2x+3x=36

6x=36

x=6

So 2x=2×6=12

3x=3×6=18

Therefore the sides of the triangle are 6,12 and 18.