2 16-0 - ) - 6 +3) 6-).12+Example 9: Compute (4.5) - (1.5)Solution: We

1.	2 16-0 - ) - 6 +3) 6-).12+Example 9: Compute (4.5) - (1.5)Solution: We have) = (4.5+1.5)(4.5-1.5)= 6 x 3 =18Exercise 4.11. Resolve in to factors:(i) x + xy (ii) 3x – 6x (iii) (1.6)a- (0.8) a (iv) 5-10m - 20n2. Factorise:(i) a +ax +ab + bx (ii)3ac +7bc-3ad – 7bd (iii) 3xy - 6zy - 3xt +6zt(iv) y° - 3y +2y- 6- xy +3x3. Factorise:(i) 4a - 25 () x'- 16 (ii) x'-y civil?lo) - (2tb) (w) (0.7) - (0\| (vi) (5a - 2b)-(2a - b)torisation of trinomialsinomials of the
Answer» 1) ii) 2) IV3) iii is the correct answer 4a^2 - 25= (2a)^2 - (5)^2= (2a + 5)(2a - 5)

2 16-0 - ) - 6 +3) 6-).12+Example 9: Compute (4.5) - (1.5)Solution: We have) = (4.5+1.5)(4.5-1.5)= 6 x 3 =18Exercise 4.11. Resolve in to factors:(i) x + xy (ii) 3x – 6x (iii) (1.6)a- (0.8) a (iv) 5-10m - 20n2. Factorise:(i) a +ax +ab + bx (ii)3ac +7bc-3ad – 7bd (iii) 3xy - 6zy - 3xt +6zt(iv) y° - 3y +2y- 6- xy +3x3. Factorise:(i) 4a - 25 () x'- 16 (ii) x'-y civil?lo) - (2tb) (w) (0.7) - (0| (vi) (5a - 2b)-(2a - b)torisation of trinomialsinomials of the

Answer»

1) ii) 2) IV3) iii is the correct answer

4a^2 - 25= (2a)^2 - (5)^2= (2a + 5)(2a - 5)