a few questions

question 2

rectangular shape

area of land is represented by: 2x^2 + 17xy +21y^2

give the possible expressions that represent the dimmensions, and

a fence will be planted around the shape, and it will be x meters from the pitch. Give the algebreic expression that reprsents the length of hte proposed fencing

question 3

a box has a voulme of 12x^3 - 16x^2 -5x+3, and the top has a surface area of 6x^2 -11x +3, give the height

an fyi: this is not homework, this is from a pratice sheet for the nationwide exam tomorrow.