Question

expand using identity (2a-6) ²​

Answer 1

Answer:

using identity (a-b)^2

a^2+b^2-2ab

(2a-6)^2

(2a)^2+(-6)^2-2×2a×(-6)

4a^2+36+24a

Answer 2

Answer:

4 a^2 - 24 a + 36

Step-by-step explanation:

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

(2a - 6)^2 = 4 a^2 - 24a + 36