Basic Math Examples

$8 \cdot \sqrt{81} - 8 \cdot 2$

Step 1

Simplify each term.

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Step 1.1

Rewrite $81$ as $9^{2}$ .

$8 \cdot \sqrt{9^{2}} - 8 \cdot 2$

Step 1.2

Pull terms out from under the radical, assuming positive real numbers.

$8 \cdot 9 - 8 \cdot 2$

Step 1.3

Multiply $8$ by $9$ .

$72 - 8 \cdot 2$

Step 1.4

Multiply $- 8$ by $2$ .

$72 - 16$

Step 2

Subtract $16$ from $72$ .

$56$