Question

Factorise the following polynomials by grouping the terms:
1. ma? + mb2 + na? + nb2
2 ax + bx + by + cy + cx + ay
pa - 2pb-qa + 2qb 5. a - a²b + ab2 - 63
7. 1+x + xy + xy 8 * - 5x + 25 - 5x2
10. alx + bry + bnz + amy + blx + anz
12, a - 2 - (a - 2)2 + ma - 2m
14 R - (y + 5x + 5y 15. xy2 - (x - zby - 2
3- 2x - ax – 2y + ay
6. x² - y2 + x - x
28(2x - y)2 - 8x + 4y
11. x2 + xy (1 - 2x) - 27°
13. x3 - 27y3 - 9xy + 270"
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Answer 1

Answer:

13. (x-3y)³ Answerrrrrrrrrrr