Question

Use the suitable ident
y (1) (x+3)(x + 7)
(iv) (5 – 3x)(3+2x)​

Answer 1

Answer:

1. 2x +10

2. 8-x

Hope this will help you.

Answer 2

Step-by-step explanation:

1. By using the suitable identity

( x + a) (x + b) =x2 +(a+b) x +ab

(x +3) ( x +7) = x2 +(3 +7)x +21

= x2 +10x +21