Question

Q28.Factorise; 25
² + 20ab +4
²​

Answer 1

Step-by-step explanation:

25^2=5×5×5×5×5×5

20ab=4×5×a×b

4^2=2×2×2×2×2×2×2×2

5^6(4^ab +2^7)

are the factors

Answer 2

Answer:

(5+2)(5+2)

Step-by-step explanation:

25 ² + 20ab +4 ²​

=(5)²+2(5)(2)+(2)²

=(5+2)²

=(5+2)(5+2)