Question

(a-3b)^2 i want this question's answee please​

Answer 1

Answer:

a² + 9b² - 6ab

Step-by-step explanation:

( a - 3b )²

Formula : -

( x - y )² = x² + y² - 2xy

Here,

x = a

y = 3b

( a - 3b )²

= a² + ( 3b )² - 2 ( a ) ( 3b )

= a² + 9b² - 6ab

Answer 2

Answer:

$a^{2} - 6ab + 9b^{2}$

Step-by-step explanation:

(a-3b)^2

expanding with the identity (a-b)^2  = a^2-2ab+b^2

= a^2 - 2*a*3b + (3b)^2

= a^2 - 6ab + 9b^2