Question

Use a suitable identity to get each of the following products.

(i) (x + 3) (x + 3)
(ii) (2y + 5) (2y + 5)​

Answer 1

Step-by-step explanation:

(i) (x+3)

2

=x

2

+6x+9 ∵[(a+b)

2

=a

2

+b

2

+2ab]

Hope helps you dear

Answer 2

Answer:

$(i) (x+3)^2 \\ =x^2+6x+9\ \∵[(a+b)^2=a^2+b^2+2ab]$

$(ii) (2y+5)^{2} \\ =4 {y}^{2} +25+20y      \\ ∵[(a+b)^{2} = {a}^{2} + {a}^{2} +2ab]$

Step-by-step explanation:

Hope it helps