Algebra-1

To factor the polynomial 3x³ + 15x² - 9x - 45, we can use the grouping method:

Step 1: Group the terms: (3x³ + 15x²) - (9x + 45)

Step 2: Factor out the common factor from each group:
In the first group, we can factor out 3x²: 3x²(x + 5).
In the second group, we can factor out 9: 9(x + 5).

Now, we...