Math Problem Statement

Solve graphically the quadratic inequalities listed in the provided image.

Solution

The image you provided shows a list of quadratic inequalities to be solved graphically. The heading says "Risolvere graficamente le seguenti disequazioni numeriche di secondo grado," which means "Solve graphically the following second-degree numerical inequalities." There are numbered problems (97 to 114) and their corresponding solutions or intervals of values where the inequality holds.

Here is a breakdown of some problems and their solutions:

Example Problems:

  • 97: x25x+4>0x^2 - 5x + 4 > 0

    • Solution: x<1x < 1 or x>4x > 4
  • 99: x210x+25>0x^2 - 10x + 25 > 0

    • Solution: x5x \neq 5 (the equation has a double root at 5, so inequality holds for all other values)
  • 101: x2640x^2 - 64 \geq 0

    • Solution: x8x \leq -8 or x8x \geq 8
  • 109: 12x2+6x>0\frac{1}{2}x^2 + 6x > 0

    • Solution: 0<x<120 < x < 12
  • 111: 3x2503x^2 - 5 \geq 0

    • Solution: x53x \leq -\frac{\sqrt{5}}{3} or x53x \geq \frac{\sqrt{5}}{3}

Would you like further details on any of these problems, or assistance solving any specific inequality?

Relative Questions:

  1. What is the graphical method for solving quadratic inequalities?
  2. How do we determine the intervals where a quadratic inequality holds?
  3. What are the common steps to solve ax2+bx+c0ax^2 + bx + c \leq 0 inequalities algebraically?
  4. How does the discriminant of a quadratic equation affect the solution of inequalities?
  5. Can the solutions of quadratic inequalities be represented using set notation?

Tip:

Always check the sign of the leading coefficient when solving quadratic inequalities; it affects the direction of the inequality.

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Math Problem Analysis

Mathematical Concepts

Quadratic Inequalities
Algebra
Inequalities

Formulas

Quadratic formula: x = (-b ± √(b² - 4ac)) / 2a
Discriminant: Δ = b² - 4ac
Factorization: ax² + bx + c = (px + q)(rx + s)

Theorems

Zero Product Property
Quadratic Formula Theorem
Discriminant and the Nature of Roots

Suitable Grade Level

Grades 9-12