Evaluate (2i)^2

${(2 i)}^{2}$

Step 1

Apply the product rule to $2 i$ .

$2^{2} i^{2}$

Step 2

Raise $2$ to the power of $2$ .

$4 i^{2}$

Step 3

Rewrite $i^{2}$ as $- 1$ .

$4 \cdot - 1$

Step 4

Multiply $4$ by $- 1$ .

$- 4$

Related Questions