Complete the real world situation that would require adding polynomials. A farmer is fencing in a triangular piece of land. One side can be represented by x + 9, another by 7x + 4, and the last by 6x

Complete the real world situation that would require adding polynomials. A farmer is fencing in a triangular piece of land. One side can be represented by x + 9, another by 7x + 4, and the last by 6x − 3. What polynomial represents the amount of fencing he will need to (fence on side of the land or surround the land)

Complete the polynomial operation. Enter the solution in standard form.

(x + y)4 = ?