Question

(2a + 7b)^2. Answer the question please!!

Answer 1

Answer:

4a^2+28ab+49b^2

Step-by-step explanation:

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

Answer 2

Answer:

By using formula (a+b)^2= a^2+b^2+2.a.b

(2a+7b)^2= (2a)^2+ (7b)^2+ 2.2a.7b

This is equal to 4a^2+49b^2+ 28ab