Question

this expansion is a perfect square or not ​

Answer 1

Answer:

hey mate there is your answer

Step-by-step explanation:

a2-6ab-9b2

a2-3ab-3ab-9b2

a(a-3b)+3b(a-3b)

(a-3b)(a+3b)

hope this will help you

Answer 2

Step-by-step explanation:

(a) ^2 - 3×2ab +3b^2

a^2 - 2ab + b^2 =(a -b) ^2

= (a -3b)^2

NO, the given expansion is not a perfect square