Question 1111071
Area = wallpaper suitable +(x+2)(x+1)+(x^2+5x+6)
x^2+3x+2+(x^2+5x+6)=2x^2+8x+8
Total area=3x^2+4x+1
area not covered=2x^2+8x+8
Area needed to be covered is x^2-4x-7 ANSWER

suppose x=10
area of windows is 132
area of shelving is 156
area of whole room is 341
area needed to be covered is 341-288=53
x^2-4x-7=53, when x=10, checks