Math Problem Statement

Solve the equation: x^2/6 + (7 - x^2)/2 = -x^2/3

Solution

The equation provided in the image is:

x26+7x22=x23\frac{x^2}{6} + \frac{7 - x^2}{2} = -\frac{x^2}{3}

Let's solve this step by step:

Step 1: Simplify the equation

First, rewrite the terms so that they all have a common denominator.

x26+7x22=x23\frac{x^2}{6} + \frac{7 - x^2}{2} = -\frac{x^2}{3}

The least common denominator (LCD) of 6, 2, and 3 is 6. Rewrite all terms with a denominator of 6:

x26+3(7x2)6=2x26\frac{x^2}{6} + \frac{3(7 - x^2)}{6} = \frac{-2x^2}{6}

This simplifies to:

x26+213x26=2x26\frac{x^2}{6} + \frac{21 - 3x^2}{6} = \frac{-2x^2}{6}

Step 2: Combine terms on the left-hand side

Now that all terms have the same denominator, combine them:

x2+(213x2)6=2x26\frac{x^2 + (21 - 3x^2)}{6} = \frac{-2x^2}{6}

Simplify the numerator:

x2+213x26=2x26\frac{x^2 + 21 - 3x^2}{6} = \frac{-2x^2}{6}

2x2+216=2x26\frac{-2x^2 + 21}{6} = \frac{-2x^2}{6}

Step 3: Eliminate the denominator

Multiply both sides of the equation by 6 to eliminate the denominator:

2x2+21=2x2-2x^2 + 21 = -2x^2

Step 4: Solve for x2x^2

Cancel the 2x2-2x^2 on both sides:

21=021 = 0

This leads to a contradiction, which means there is no solution to the equation.

Would you like more details, or do you have any other questions? Here are some related questions you could explore:

  1. How do you find the least common denominator in a fraction equation?
  2. What does it mean if an equation has no solution?
  3. How can contradictions arise when solving quadratic equations?
  4. Could this equation have a solution in a different context, like complex numbers?
  5. What are the common types of errors that lead to contradictions when solving equations?

Tip: Always check for contradictions in the final steps of algebraic simplification. It could indicate that no solution exists for the given equation!

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Math Problem Analysis

Mathematical Concepts

Algebra
Rational Equations
Quadratic Equations

Formulas

ax^2 + bx + c = 0
Combining fractions with a common denominator

Theorems

No solution theorem

Suitable Grade Level

Grade 9-11