Expand and simplify a) (x+8) (x+2) + (x+3) (x+9) b) (3y-2) (y+4)+ (5y-1)(y-3)

A, x^2+11x+19
b, 8y^2-6y-5

A) (x+8)(x+2)+(x+3)(x+9)
x^2+8x+2x+16+x^2+3x+9x+27
2x^2+22x+43

b)(3y-2)(y+4)+(5y-1)(y-3)
3y^2+12y-2y-8+5y^2-1y-15y+3
8y^2-6y-5

Area of rectangle = 15 x 8
                           =120

area of parallelogram = 8 x 15 
                               =120
so, they have the same area, because the length of a rectangle is the same as the height of a parallelogram and also for the base.