SO,
Exercise 14B
Factorise:
1. (x+3)x + (x+3) y
4. 2(x - a)? + 4m(x - a)
7. (x + y)2 + (x + y)
10. a (x + y + z) + b (x + y + z) + (x + y + z)
12. a(a - 2c) + b(a - 2c) + (2C - a)
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