Basic Math Examples

$5 z \cdot (3 z) - 4$

Step 1

Rewrite using the commutative property of multiplication.

$5 \cdot 3 z \cdot z - 4$

Step 2

Multiply $z$ by $z$ by adding the exponents.

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Step 2.1

Move $z$ .

$5 \cdot 3 (z \cdot z) - 4$

Step 2.2

Multiply $z$ by $z$ .

$5 \cdot 3 z^{2} - 4$

Step 3

Multiply $5$ by $3$ .

$15 z^{2} - 4$