- 14x² + 7x - 6+ 6x- 9x + 16

14xx2(square) + 7x - 6 + 6x - 9x + 16

14x2x(square) + 7x - 6 - 3x + 16

114x2(square) + 7x - 3x - 6 + 16

14x2(square) + 4x - 10

15

step-by-step explanation:

area of part 1:

a1=base*height/2=(8+2)*(8-2-2-1)/2=10*3/2=15 ft^2

area of part 2:

a2=length*width=(8+2)*1=10 ft2

area of part 3:

a3=length*width=8*2=16 ft2

total shaded area : a1+a2+a3=41 ft2

total area of the reactangle : a=16*8=128 ft2

total area of the nonshaded region : 128-41=87 ft2