Question

Factorize 49(a+b)²-28(a²-b²)+4(a-b)²

Answer 1

1. 49(a+b)²-28(a²-b²)+4(a-b)²
2. 49a^2 + 49b^2 + 98ab - 28 a^2 + 28b^2 + 4a^2 + 4b^2 - 8ab
3. (.....after adding & substracting.....)25a^2 + 81b^2 + 90 ab
4. (5a)^2 + (9b)^2 + 2×5a×9b
5. (5a + 9b)^2
6. (5a + 9b)(5a + 9b)

Answer 2

Answer:

i don't now this answer is write