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B. Complete the factors with the missing term:
1. n
3 + 27 = (n + 3) (n2

- ____ + 9
2. m3 + 729 = (m + 9) (m2 – 9m + ____)
3. 2x3
- 54 = 2 (x - 3) (____ + 3x + 9)
4. 8x3 + 27y3 = (2x + 3y) (4x2 – 6xy + ____)
5. x
3 + 1000y3 = (x + 10y) (x2

- ____ + 100y2 grade 8 lesson