Simplify (9r^3-54r^2)/(9r^2+45r)*(9r^2+9r)/(9r^3-54r^2)

$\frac{9 r^{3} - 54 r^{2}}{9 r^{2} + 45 r} \cdot \frac{9 r^{2} + 9 r}{9 r^{3} - 54 r^{2}}$

Factor $9 r^{2}$ out of $9 r^{3} - 54 r^{2}$ .

Factor $9 r^{2}$ out of $9 r^{3}$ .

$\frac{9 r^{2} (r) - 54 r^{2}}{9 r^{2} + 45 r} \cdot \frac{9 r^{2} + 9 r}{9 r^{3} - 54 r^{2}}$

Factor $9 r^{2}$ out of $- 54 r^{2}$ .

$\frac{9 r^{2} (r) + 9 r^{2} (- 6)}{9 r^{2} + 45 r} \cdot \frac{9 r^{2} + 9 r}{9 r^{3} - 54 r^{2}}$

Factor $9 r^{2}$ out of $9 r^{2} (r) + 9 r^{2} (- 6)$ .

$\frac{9 r^{2} (r - 6)}{9 r^{2} + 45 r} \cdot \frac{9 r^{2} + 9 r}{9 r^{3} - 54 r^{2}}$

Factor $9 r$ out of $9 r^{2} + 45 r$ .

Factor $9 r$ out of $9 r^{2}$ .

$\frac{9 r^{2} (r - 6)}{9 r (r) + 45 r} \cdot \frac{9 r^{2} + 9 r}{9 r^{3} - 54 r^{2}}$

Factor $9 r$ out of $45 r$ .

$\frac{9 r^{2} (r - 6)}{9 r (r) + 9 r (5)} \cdot \frac{9 r^{2} + 9 r}{9 r^{3} - 54 r^{2}}$

Factor $9 r$ out of $9 r (r) + 9 r (5)$ .

$\frac{9 r^{2} (r - 6)}{9 r (r + 5)} \cdot \frac{9 r^{2} + 9 r}{9 r^{3} - 54 r^{2}}$

Factor $9 r$ out of $9 r^{2} + 9 r$ .

Factor $9 r$ out of $9 r^{2}$ .

$\frac{9 r^{2} (r - 6)}{9 r (r + 5)} \cdot \frac{9 r (r) + 9 r}{9 r^{3} - 54 r^{2}}$

Factor $9 r$ out of $9 r$ .

$\frac{9 r^{2} (r - 6)}{9 r (r + 5)} \cdot \frac{9 r (r) + 9 r (1)}{9 r^{3} - 54 r^{2}}$

Factor $9 r$ out of $9 r (r) + 9 r (1)$ .

$\frac{9 r^{2} (r - 6)}{9 r (r + 5)} \cdot \frac{9 r (r + 1)}{9 r^{3} - 54 r^{2}}$

Factor $9 r^{2}$ out of $9 r^{3} - 54 r^{2}$ .

Factor $9 r^{2}$ out of $9 r^{3}$ .

$\frac{9 r^{2} (r - 6)}{9 r (r + 5)} \cdot \frac{9 r (r + 1)}{9 r^{2} (r) - 54 r^{2}}$

Factor $9 r^{2}$ out of $- 54 r^{2}$ .

$\frac{9 r^{2} (r - 6)}{9 r (r + 5)} \cdot \frac{9 r (r + 1)}{9 r^{2} (r) + 9 r^{2} (- 6)}$

Factor $9 r^{2}$ out of $9 r^{2} (r) + 9 r^{2} (- 6)$ .

$\frac{9 r^{2} (r - 6)}{9 r (r + 5)} \cdot \frac{9 r (r + 1)}{9 r^{2} (r - 6)}$

Combine.

$\frac{9 r^{2} (r - 6) (9 r (r + 1))}{9 r (r + 5) (9 r^{2} (r - 6))}$

Multiply $r^{2}$ by $r$ by adding the exponents.

Move $r$ .

$\frac{9 (r \cdot r^{2}) (r - 6) (9 (r + 1))}{9 r (r + 5) (9 r^{2} (r - 6))}$

Multiply $r$ by $r^{2}$ .

Raise $r$ to the power of $1$ .

$\frac{9 (r^{1} r^{2}) (r - 6) (9 (r + 1))}{9 r (r + 5) (9 r^{2} (r - 6))}$

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

$\frac{9 r^{1 + 2} (r - 6) (9 (r + 1))}{9 r (r + 5) (9 r^{2} (r - 6))}$

Add $1$ and $2$ .

$\frac{9 r^{3} (r - 6) (9 (r + 1))}{9 r (r + 5) (9 r^{2} (r - 6))}$

Multiply $r$ by $r^{2}$ by adding the exponents.

Move $r^{2}$ .

$\frac{9 r^{3} (r - 6) (9 (r + 1))}{9 (r^{2} r) (r + 5) (9 (r - 6))}$

Multiply $r^{2}$ by $r$ .

Raise $r$ to the power of $1$ .

$\frac{9 r^{3} (r - 6) (9 (r + 1))}{9 (r^{2} r^{1}) (r + 5) (9 (r - 6))}$

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

$\frac{9 r^{3} (r - 6) (9 (r + 1))}{9 r^{2 + 1} (r + 5) (9 (r - 6))}$

Add $2$ and $1$ .

$\frac{9 r^{3} (r - 6) (9 (r + 1))}{9 r^{3} (r + 5) (9 (r - 6))}$

Cancel the common factor of $9$ .

Cancel the common factor.

$\frac{9 r^{3} (r - 6) (9 (r + 1))}{9 r^{3} (r + 5) (9 (r - 6))}$

Rewrite the expression.

$\frac{(r^{3} (r - 6)) (9 (r + 1))}{(r^{3} (r + 5)) (9 (r - 6))}$

Cancel the common factor of $r^{3}$ .

Cancel the common factor.

$\frac{r^{3} (r - 6) (9 (r + 1))}{r^{3} (r + 5) (9 (r - 6))}$

Rewrite the expression.

$\frac{(r - 6) (9 (r + 1))}{(r + 5) (9 (r - 6))}$

Cancel the common factor of $r - 6$ .

Cancel the common factor.

$\frac{(r - 6) (9 (r + 1))}{(r + 5) (9 (r - 6))}$

Rewrite the expression.

$\frac{9 (r + 1)}{(r + 5) \cdot (9)}$

Cancel the common factor of $9$ .

Cancel the common factor.

$\frac{9 (r + 1)}{(r + 5) \cdot 9}$

Rewrite the expression.

$\frac{r + 1}{r + 5}$

Simplify (9r^3-54r^2)/(9r^2+45r)*(9r^2+9r)/(9r^3-54r^2)

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