Quadratic Inequality
1. Stating the problem: Solve the inequality $$x^2 > 3x + 4$$.
2. Rearrange all terms to one side to compare to zero:
$$x^2 - 3x - 4 > 0$$.
3. Factor the quadratic expression:
$$x^2 - 3x - 4 = (x - 4)(x + 1)$$.
4. The inequality becomes:
$$(x - 4)(x + 1) > 0$$.
5. This product is greater than zero when both factors are positive or both are negative.
6. Case 1: Both positive:
$$x - 4 > 0 \implies x > 4$$
$$x + 1 > 0 \implies x > -1$$
Since $x > 4$ is more restrictive, solution for case 1 is:
$$x > 4$$.
7. Case 2: Both negative:
$$x - 4 < 0 \implies x < 4$$
$$x + 1 < 0 \implies x < -1$$
Since $x < -1$ is more restrictive, solution for case 2 is:
$$x < -1$$.
8. Combine solutions from both cases:
$$x < -1 \quad \text{or} \quad x > 4$$.
Final answer: $$x < -1 \text{ or } x > 4$$.