Algebra-1

To factor the polynomial 7x³ + 35x² - 21x - 105, we can use the grouping method:

Step 1: Group the terms: (7x³ + 35x²) - (21x + 105)

Step 2: Factor out the common factor from each group:
In the first group, we can factor out 7x²: 7x²(x + 5).
In the second group, we can factor out 21: 21(x + 5).<...