Math Problem Statement

Evaluate the limit as x approaches 2 for the expression (x^2 + 5x + 6) / (x^2 + 4x).

Solution

The expression given in the image is:

limx2x2+5x+6x2+4x\lim_{x \to 2} \frac{x^2 + 5x + 6}{x^2 + 4x}

Let's break it down:

  1. Substitute x=2x = 2 into the expression:

    22+5(2)+622+4(2)=4+10+64+8=2012=53\frac{2^2 + 5(2) + 6}{2^2 + 4(2)} = \frac{4 + 10 + 6}{4 + 8} = \frac{20}{12} = \frac{5}{3}

So, the limit is:

53\boxed{\frac{5}{3}}

Would you like further details or have any questions about this solution?

Here are 5 related questions for further practice:

  1. What is the limit of limx3x2+2x+1x2+3x+2\lim_{x \to 3} \frac{x^2 + 2x + 1}{x^2 + 3x + 2}?
  2. How do you handle limits that result in an indeterminate form like 00\frac{0}{0}?
  3. Can you find the limit of a function as xx \to \infty for rational expressions?
  4. What is L'Hopital's Rule and when is it applied in limit problems?
  5. How do you factor quadratic expressions to simplify limit problems?

Tip: Always check if direct substitution works first when solving limits. If it results in an indeterminate form, try factoring, canceling, or using other techniques like L'Hopital's Rule.

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Math Problem Analysis

Mathematical Concepts

Limits
Rational Functions
Substitution

Formulas

Limit as x approaches a value: lim_{x -> a} f(x)
Direct substitution for limits

Theorems

Limit Laws
Factoring in limits

Suitable Grade Level

Grades 11-12