Basic Math Examples

$(- 2 x^{2} y) (9 x^{3})$

Step 1

Multiply $x^{2}$ by $x^{3}$ by adding the exponents.

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Step 1.1

Move $x^{3}$ .

$- 2 (x^{3} x^{2}) y \cdot 9$

Step 1.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$- 2 x^{3 + 2} y \cdot 9$

Step 1.3

Add $3$ and $2$ .

$- 2 x^{5} y \cdot 9$

Step 2

Multiply $9$ by $- 2$ .

$- 18 x^{5} y$