Question

plz ans this.ignore the pen marks

Answer 1

Answer:

(2a + b)²

Step-by-step explanation:

Given Equation is 4a² + b² + 4ab

It can be written as:

= 4a² + 4ab + b²

= 4a² + 2ab + 2ab + b²

= 2a(2a + b) + b(2a + b)

= (2a + b)(2a + b)

= (2a + b)².

Hope this information helps!

Answer 2

!!!

given :- 4a^2 +  b^2 + 4ab

we know the first identity of algebraic expression, that is (a + b)^2 = a^2 + b^2 + 2ab

4a^2 +  b^2 + 4ab can be written as,

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

here a = 2a and b = b

∴ 4a^2 +  b^2 + 4ab = (2a + b)^2

!!!