Complete the box to illustrate the product
(x+8)(x+7)
__x__________8____
| | |
? | 7x | ? |
| | |
|__________| ______|
| | |
| | |
x | x^2 | ? |
| | |
|_________|________|
Help me please! I do not know where to even begin.
No box; no product.
(x+8)(x+7) = x^2 + 15x + 56