Question

EXERCISE 9.5
Use a suitable identity to get each of the following products.
(ii) (2y + 5) (2y + 5)
() (x + 3) (x + 3)​

Answer 1

Step-by-step explanation:

(ii) (2y + 5) (2y + 5) = (2y + 5)2

= 4y2 + 20y + 25

Using (a+b) 2 = a2 + b2 + 2ab

() (x + 3) (x + 3) = (x + 3)2

= x2 + 6x + 9

Using (a+b) 2 = a2 + b2 + 2ab

Answer 2

EXERCISE 9.5

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

(ii) (2y + 5) (2y + 5)

() (x + 3) (x + 3)

❀Answer❀

II) (2y+5)(2y+5)

Using,

(a+b) 2 =a 2+2.a.b+b ^2,we get the above equation.

=(2y+5)^ 2

=(2y) ^2 +2.2y.5+5 ^2

=4y ^2+20y+25

()(x+3) (x+3)

answer in the second attachment

Hope it hlps u mate