Basic Math Examples

$a \cdot (3 a - b)$

Step 1

Apply the distributive property.

$a (3 a) + a (- b)$

Step 2

Reorder.

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Step 2.1

Rewrite using the commutative property of multiplication.

$3 a \cdot a + a (- b)$

Step 2.2

Rewrite using the commutative property of multiplication.

$3 a \cdot a - a b$

Step 3

Multiply $a$ by $a$ by adding the exponents.

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Step 3.1

Move $a$ .

$3 (a \cdot a) - a b$

Step 3.2

Multiply $a$ by $a$ .

$3 a^{2} - a b$