Simplify i^2(2i^2-5)

$i^{2} (2 i^{2} - 5)$

Step 1

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

$- 1 (2 i^{2} - 5)$

Step 2

Simplify each term.

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

$- 1 (2 \cdot - 1 - 5)$

Multiply $2$ by $- 1$ .

$- 1 (- 2 - 5)$

$- 1 (- 2 - 5)$

Step 3

Simplify the expression.

Subtract $5$ from $- 2$ .

$- 1 \cdot - 7$

Multiply $- 1$ by $- 7$ .

$7$

$7$

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