Basic Math Examples

$\frac{- 27^{n + 2} + 6 \cdot 3^{3 n + 3}}{3^{n} \cdot 9^{n + 2}}$

Step 1

Simplify the denominator.

Tap for more steps...

Step 1.1

Rewrite $9$ as $3^{2}$ .

$\frac{- 27^{n + 2} + 6 \cdot 3^{3 n + 3}}{3^{n} \cdot {(3^{2})}^{n + 2}}$

Step 1.2

Multiply the exponents in ${(3^{2})}^{n + 2}$ .

Tap for more steps...

Step 1.2.1

Apply the power rule and multiply exponents, ${(a^{m})}^{n} = a^{m n}$ .

$\frac{- 27^{n + 2} + 6 \cdot 3^{3 n + 3}}{3^{n} \cdot 3^{2 (n + 2)}}$

Step 1.2.2

Apply the distributive property.

$\frac{- 27^{n + 2} + 6 \cdot 3^{3 n + 3}}{3^{n} \cdot 3^{2 n + 2 \cdot 2}}$

Step 1.2.3

Multiply $2$ by $2$ .

$\frac{- 27^{n + 2} + 6 \cdot 3^{3 n + 3}}{3^{n} \cdot 3^{2 n + 4}}$

Step 1.3

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

$\frac{- 27^{n + 2} + 6 \cdot 3^{3 n + 3}}{3^{n + 2 n + 4}}$

Step 1.4

Add $n$ and $2 n$ .

$\frac{- 27^{n + 2} + 6 \cdot 3^{3 n + 3}}{3^{3 n + 4}}$

Step 2

Simplify with factoring out.

Tap for more steps...

Step 2.1

Factor $- 1$ out of $- 27^{n + 2}$ .

$\frac{- (27^{n + 2}) + 6 \cdot 3^{3 n + 3}}{3^{3 n + 4}}$

Step 2.2

Factor $- 1$ out of $6 \cdot 3^{3 n + 3}$ .

$\frac{- (27^{n + 2}) - (- 6 \cdot 3^{3 n + 3})}{3^{3 n + 4}}$

Step 2.3

Factor $- 1$ out of $- (27^{n + 2}) - (- 6 \cdot 3^{3 n + 3})$ .

$\frac{- (27^{n + 2} - 6 \cdot 3^{3 n + 3})}{3^{3 n + 4}}$

Step 2.4

Simplify the expression.

Tap for more steps...

Step 2.4.1

Rewrite $- (27^{n + 2} - 6 \cdot 3^{3 n + 3})$ as $- 1 (27^{n + 2} - 6 \cdot 3^{3 n + 3})$ .

$\frac{- 1 (27^{n + 2} - 6 \cdot 3^{3 n + 3})}{3^{3 n + 4}}$

Step 2.4.2

Move the negative in front of the fraction.

$- \frac{27^{n + 2} - 6 \cdot 3^{3 n + 3}}{3^{3 n + 4}}$