Algebra-1

To factor the polynomial 5a² + 7ab + 5a + 7b, let's follow the factor by grouping method:

Step 1: Group the terms: (5a² + 7ab) + (5a + 7b)

Step 2: Factor out the common factor from each group:
In the first group, we can factor out a: a(5a + 7b).
In the second group, there is no common factor: (5a + 7b).

Now, we have: a(5a + 7b) + (