Question

(a+2b+5c)² solve it ​

Answer 1

Answer:

a² + 4b2 + 25c² + 4ab + 20bc + 10ac

Step-by-step explanation:

By using identity

• (a + b + c)² = a² + b² + c² + 2ab + 2bc + 2ca

Using this identity

• = (a)² + (2b)² + (5c)² + 2(a) (2b) + 2 (2b) (5c) + 2 (5c) (a)
• = a² + 4b2 + 25c² + 4ab + 20bc + 10ac

Hence, answer is a² + 4b2 + 25c² + 4ab + 20bc + 10ac

Hope helps:-)

Answer 2

The Answer is in Attachment

Hope it Help you