Question

4a² + b²+ 25c² - 4ab - 10bc + 20ca​

Answer 1

Answer:

hope its you there is answer

Answer 2

Answer:

4a2 + b2 + 25c2

4ab−10bc+20ca

= (2a)2 + (-b)2 +(5c)2

= 2×2a×(−b)+2×(−b)×5c+2×5c×2a

Using, (a+b+c)

2=a2 + b2 +c2+2ab+2bc+2a

= (2a-b+5c)2

hence the answer is

=(2a−b+5c)(2a−b+5c)