Question

(2a+3b)2 + (4a - 3b)2​

Answer 1

Answer:

12a-12b

Step-by-step explanation:

$(2a - 3b)2 + (4a - 3b)2 \\ 4a - 6b + 8a - 6b \\ 12a - 12b$

Answer 2

Answer:

(2a+3b)^2 + (4a-3b)^2

(4 a^2 + 9b^2+12ab ) + ( 16a^2+9b^2-24ab)

4a^2 + 16a^2 + 9b^2+9b^2+12ab-24ab

20a^2 + 18b^2 -12ab

hint:

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

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