Difference of Two Squares
| __ | 1. | x2-1 | | A. | (x-1)(x+1) | | __ | 2. | x2-9 | | B. | (x-3)(x+3) | | __ | 3. | x2-36 | | C. | (x-11)(x+11) | | __ | 4. | x2-49 | | D. | (x-7)(x+7) | | __ | 5. | x2-64 | | E. | (x-9)(x+9) | | __ | 6. | x2-81 | | F. | (x-10)(x+10) | | __ | 7. | x2-100 | | G. | (x-13)(x+13) | | __ | 8. | x2-121 | | H. | (x-12)(x+12) | | __ | 9. | x2-144 | | I. | (x-6)(x+6) | | __ | 10. | x2-169 | | J. | (x-8)(x+8) |
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