1. **State the problem:** Expand and fully simplify the expression $$(2x - 1)(x - 5)(x + 6)$$.
2. **Use the distributive property (FOIL for binomials) step-by-step:** First, multiply the first two binomials:
$$ (2x - 1)(x - 5) = 2x \cdot x + 2x \cdot (-5) - 1 \cdot x - 1 \cdot (-5) $$
$$ = 2x^2 - 10x - x + 5 = 2x^2 - 11x + 5 $$
3. **Now multiply the result by the third binomial $(x + 6)$:**
$$ (2x^2 - 11x + 5)(x + 6) = 2x^2 \cdot x + 2x^2 \cdot 6 - 11x \cdot x - 11x \cdot 6 + 5 \cdot x + 5 \cdot 6 $$
$$ = 2x^3 + 12x^2 - 11x^2 - 66x + 5x + 30 $$
4. **Combine like terms:**
$$ 2x^3 + (12x^2 - 11x^2) + (-66x + 5x) + 30 = 2x^3 + x^2 - 61x + 30 $$
5. **Final simplified expression:**
$$ \boxed{2x^3 + x^2 - 61x + 30} $$
This is the fully expanded and simplified form of the original expression.
Expand Simplify Ce7623
Step-by-step solutions with LaTeX - clean, fast, and student-friendly.