Question

= (2x + y + 3
t
1.
Use suitable identities to fin
(i) (x+4)(x+10)
3
3
(iv) (u2 + ) (02-2
2. Evaluate the following prod
(i) 103 x 107
Factorise the following usi
3.
(1) 9x + 6xy + y2​

Answer 1

Answer:

1. (i) x² + 14x + 40

2. (i) 11021

3. (i) (3x + y)²

Step-by-step explanation:

1. (x + 4) (x + 10) : x × x + x × 10 + 4 × x + 4×10

x² + 10x + 4x + 40

x² + 14x + 40

2. 103 × 107 : (100 + 3) (100 + 7)

100 ×100 + 100× 7 + 100× 3 + 3×7

10000 + 700 + 300 + 21

11021

3. 9x + 6xy + y² : (3x)² + 2 × 3x × y + (y)²

(3x + y)²