Math Problem Statement

given that p = 3-22\sqrt2and q = 2-22\sqrt2, find the value of (p+q) / (p-q)

Solution

We are given the following expressions for pp and qq:

p=322p = 3 - 2\sqrt{2} q=222q = 2 - 2\sqrt{2}

We need to find the value of p+qpq\frac{p+q}{p-q}.

Step 1: Compute p+qp + q

p+q=(322)+(222)p + q = (3 - 2\sqrt{2}) + (2 - 2\sqrt{2}) Combine like terms: p+q=(3+2)2222p + q = (3 + 2) - 2\sqrt{2} - 2\sqrt{2} p+q=542p + q = 5 - 4\sqrt{2}

Step 2: Compute pqp - q

pq=(322)(222)p - q = (3 - 2\sqrt{2}) - (2 - 2\sqrt{2}) Distribute the negative sign and combine like terms: pq=3222+22p - q = 3 - 2\sqrt{2} - 2 + 2\sqrt{2} pq=(32)+(22+22)p - q = (3 - 2) + (-2\sqrt{2} + 2\sqrt{2}) pq=1p - q = 1

Step 3: Compute p+qpq\frac{p+q}{p-q}

We now substitute the values of p+qp + q and pqp - q: p+qpq=5421\frac{p+q}{p-q} = \frac{5 - 4\sqrt{2}}{1} p+qpq=542\frac{p+q}{p-q} = 5 - 4\sqrt{2}

Thus, the value of p+qpq\frac{p+q}{p-q} is:

542\boxed{5 - 4\sqrt{2}}

Do you want further details or have any questions?

Here are some relative questions:

  1. What would happen if the radicals were cubed instead of square roots?
  2. How does the subtraction of radicals influence the outcome?
  3. How do we handle expressions with complex numbers instead of square roots?
  4. What if pp and qq were fractions instead of integers plus radicals?
  5. How would the solution change if pp and qq had different coefficients for 2\sqrt{2}?

Tip: Simplify expressions with like terms before applying any operations to make the process easier.

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Math Problem Analysis

Mathematical Concepts

Algebra
Radical Expressions
Simplification

Formulas

(a + b) / (a - b) for real numbers a and b
Simplification of radical expressions

Theorems

Basic properties of radicals
Arithmetic with like terms

Suitable Grade Level

Grades 9-11