Math Problem Statement

3x²=5-2x what is even number??

Solution

Let's solve the equation 3x2=52x3x^2 = 5 - 2x and find the even numbers among the solutions.

  1. Rewrite the equation in standard form:
    3x2+2x5=03x^2 + 2x - 5 = 0

  2. Solve the quadratic equation using the quadratic formula:
    x=b±b24ac2ax = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}, where a=3a = 3, b=2b = 2, and c=5c = -5.

  3. Calculate the discriminant:
    b24ac=224(3)(5)=4+60=64b^2 - 4ac = 2^2 - 4(3)(-5) = 4 + 60 = 64

  4. Find the roots:
    x=2±642(3)x = \frac{-2 \pm \sqrt{64}}{2(3)}
    x=2±86x = \frac{-2 \pm 8}{6}

  5. Calculate the two solutions:
    x1=2+86=66=1x_1 = \frac{-2 + 8}{6} = \frac{6}{6} = 1
    x2=286=106=53x_2 = \frac{-2 - 8}{6} = \frac{-10}{6} = -\frac{5}{3}

The solutions are x=1x = 1 and x=53x = -\frac{5}{3}. Among these, the only integer value is x=1x = 1. Since 1 is odd, there are no even integer solutions to the given equation.

Would you like a more detailed explanation of the steps or have any questions?

Here are some related questions for further exploration:

  1. How do you determine if a quadratic equation has real or complex solutions?
  2. What are the properties of quadratic equations with a discriminant of zero?
  3. Can a quadratic equation have exactly one real root?
  4. What is the sum of the roots of the quadratic equation 3x2+2x5=03x^2 + 2x - 5 = 0?
  5. How do you factorize a quadratic expression if the roots are not integers?
  6. What are some practical applications of solving quadratic equations?
  7. How does the graph of a quadratic function relate to its equation's solutions?
  8. What is the axis of symmetry for the parabola represented by 3x2+2x5=03x^2 + 2x - 5 = 0?

Tip: When using the quadratic formula, always check the discriminant first to determine the nature of the roots (real or complex).

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Math Problem Analysis

Mathematical Concepts

Quadratic Equations
Discriminant
Integer Solutions

Formulas

Quadratic Formula

Theorems

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Suitable Grade Level

Grades 9-12