Factorise all these.

Factorise all these. Exercise 11.4 Factorise the following (1 to IT) polynomials: 1. 3. 5. 7. 8. 9. (i) y2-5y-24 (0 1-18y-€3y2 (t) x2 — 3xy — (i) 2nZb2+ab-45 (it) Z2+ 102+24 (iO 1212 -x-35 (ii) 3x2 — 5xy — 12y2 (ii) 10p2q2— 21pq+9 (ii) 2. 12 -10 m2 — 23m 42 [Hint. (ii) x(12X + 7) -10 10.1 10. (I) (x-2Y)2 - -2y)+5 (it) 8 + + q) 02 7 10(2x -