Basic Math Examples

$3 a + b (2 a - 4 b)$

Step 1

Apply the distributive property.

$3 a + b (2 a) + b (- 4 b)$

Step 2

Rewrite using the commutative property of multiplication.

$3 a + 2 b a + b (- 4 b)$

Step 3

Rewrite using the commutative property of multiplication.

$3 a + 2 b a - 4 b \cdot b$

Step 4

Multiply $b$ by $b$ by adding the exponents.

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Step 4.1

Move $b$ .

$3 a + 2 b a - 4 (b \cdot b)$

Step 4.2

Multiply $b$ by $b$ .

$3 a + 2 b a - 4 b^{2}$