Question

expand using identity
(3a-2b)²​

Answer 1

Step-by-step explanation:

By using (a-b)^2 formula

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

9a^2+4b^2-12ab

Answer 2

Answer:

$(3a-2b)^2$ $=9a^2+4b^2 - 12ab$

Step-by-step explanation:

$(3a-2b)^2$

$=(3a)^2+(2b)^2 - 2.3a.2b$  [using the identity $(a-b)^2=a^2+b^2+2.a.b$]

$=9a^2+4b^2 - 12ab$