Question

I WILL GIVE BRAINLIST! Showthat (1+i)2 = 2i

Answer 1

Answer:

Use formula (a + b)² = a² + 2ab + b²

• (1 + i)² =
• 1² + 2*1*i + i² =
• 1 + 2i + (-1) =
• 2i

Answer 2

Answer:

(1+i)2=2i

Step-by-step explanation:

Since the 2 is on the outside of the) then that means it is multiplying and if you multiply 1x2 it will equal.2

Then if you were to multiply 2 x the i it will get 2i then you add it to get 2i