Question

(1+i)² is equal to. ​

Answer 1

Step-by-step explanation:

(1+i)² is equal to 2i

2i is the answer

Answer 2

Answer:

2i

Step-by-step explanation:

by standard exponential rules, we know that

(a+b)²=a²+b²+2ab

(1+I)²=1²+i²+2×1×i

= 1+(√(-1))²+2i

=1+(-1)+2i

=0+2i

=2i