1. **State the problem:** Solve the equation $$\frac{x}{3} \cdot \frac{x - 2}{2} = \frac{13}{5}$$.
2. **Write the formula and rules:** We need to solve for $x$ by first simplifying the left side and then isolating $x$. Multiplying fractions means multiplying numerators and denominators.
3. **Multiply the fractions on the left:**
$$\frac{x}{3} \cdot \frac{x - 2}{2} = \frac{x(x - 2)}{3 \cdot 2} = \frac{x(x - 2)}{6}$$
4. **Rewrite the equation:**
$$\frac{x(x - 2)}{6} = \frac{13}{5}$$
5. **Cross multiply to clear denominators:**
$$5 \cdot x(x - 2) = 6 \cdot 13$$
6. **Simplify both sides:**
$$5x(x - 2) = 78$$
7. **Expand the left side:**
$$5(x^2 - 2x) = 78$$
$$5x^2 - 10x = 78$$
8. **Bring all terms to one side to form a quadratic equation:**
$$5x^2 - 10x - 78 = 0$$
9. **Use the quadratic formula:**
$$x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$$ where $a=5$, $b=-10$, $c=-78$.
10. **Calculate the discriminant:**
$$b^2 - 4ac = (-10)^2 - 4 \cdot 5 \cdot (-78) = 100 + 1560 = 1660$$
11. **Calculate the roots:**
$$x = \frac{10 \pm \sqrt{1660}}{10}$$
12. **Simplify the square root:**
$$\sqrt{1660} = \sqrt{4 \cdot 415} = 2\sqrt{415}$$
13. **Final solutions:**
$$x = \frac{10 \pm 2\sqrt{415}}{10} = 1 \pm \frac{\sqrt{415}}{5}$$
**Answer:**
$$x = 1 + \frac{\sqrt{415}}{5} \quad \text{or} \quad x = 1 - \frac{\sqrt{415}}{5}$$
Multi Step Equation 75F8C6
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