Question

Simplify the expression.
(2+3i)^2

Answer 1

Answer:

-5+12i

Step-by-step explanation:

(2+3i)^2

2^2+2×2×3i+(3i)^2

4+2×2×3i+(3i)^2

4+2×2×3i+3^2i^2

4+2×2×3i+9i^2

4+2×2×3i+9×-1

4+12i+9×-1

4+12i-9

(4-9)+12i

-5+12i