Factor each difference of squares x^2-81, x^2-64, 4x^2-9, 36-49x^2, 25x^2-16, 81-100x^2
1. x^2-81 = (x+9)(x-9)
2. x^2-64 = (x+8)(x-8)
3. 4x^2-9 = (2x+3)(2x-3)
4. 36-49x^2 = (6+7x)(6-7x)
5. 25x^2-16 = (5x+4)(5x-4)
6. 81-100x^2 = (9+10x)(9-10x)
2. x^2-64 = (x+8)(x-8)
3. 4x^2-9 = (2x+3)(2x-3)
4. 36-49x^2 = (6+7x)(6-7x)
5. 25x^2-16 = (5x+4)(5x-4)
6. 81-100x^2 = (9+10x)(9-10x)