Question

What is the mean of (a+b)² ​

Answer 1

Explanation:

(a+b)2

(a+b)(a+b)……. Multiply

a*a=a2……….(1)

a*b=ab……….(2)

b*a=ba=ab……..(3)

b*b=b2…………(4)

Adding equation of (1),(2),(3)&(4)

a2+ab+ab+b2

a2+2ab+b2

Answer 2

a²+b²+2ab....... good night