Sagot :
Since the area of an rectangle is L x W, the answer will be (5x+2)(3x+1) = 15x² + 11x + 2
(5x+2)(3x+1) = Area
Use FOIL method:
F: 5x · 3x = 15x²
O: 5x · 1 = 5x
I : 2 · 3x = 6x
L : 2 · 1 = 2
(5x+2)(3x+1) = 15x² + 5x + 6x + 2 = 15x² + 11x + 2
Use FOIL method:
F: 5x · 3x = 15x²
O: 5x · 1 = 5x
I : 2 · 3x = 6x
L : 2 · 1 = 2
(5x+2)(3x+1) = 15x² + 5x + 6x + 2 = 15x² + 11x + 2