Question

Factorise the following expressions.
1. (x+y) (2x + 3y) - (x + y) (x + 1)
3. (a-2b) + (a - 2D)
5. 3a (p - 29) - b (p - 29)
7. 1 + x + xy + xy
9. ala + b) + 8a + 8b
2. 9x (6x - 5y) - 12X (
6-5
4. (a - b) + (a - b)
6. 8 (5x + 9) + 12 (5x + y)
8. x + xy + x2 + yz
+
10. a + bc + ac + ab
+
12. ax + ay-bx - by
11. a? + 2a + ab + 2b​

Answer 1

Explanation:

1 ans x+y= 4 xy

3ans 4d

5ans 2 p

Answer 2

Answer:

Correct option is

C

x=4,y=3,z=1,

40

81

Given,

2

x

×3

y

×5

z

=2160,

2160=2×2×2×2×3×3×3×5

2160=2

4

×3

3

×5

1

by comparision, we get,

x=4,y=3,z=1

3

x

×2

−y

×5

−z

=3

4

×2

−3

×5

−1

=

2

3

×5

3

4

=

40

81