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e) A fraction with 2 mixed radicals in the numerator and 2 mixed radicals in the denominator whose result contains a perfect square in the numerator when rationalized.

e) A fraction with 22 mixed radicals in the numerator and 22 mixed radicals in the denominator whose result contains a perfect square in the numerator when rationalized.

Full solution

Q. e) A fraction with 22 mixed radicals in the numerator and 22 mixed radicals in the denominator whose result contains a perfect square in the numerator when rationalized.
  1. Pick Fraction with Mixed Radicals: Let's pick a fraction with mixed radicals. How about something like (2+3)/(5+7)(\sqrt{2} + \sqrt{3}) / (\sqrt{5} + \sqrt{7})? We want to rationalize this.
  2. Rationalize Denominator: To rationalize the denominator, we'll multiply the numerator and denominator by the conjugate of the denominator. The conjugate of (5+7)(\sqrt{5} + \sqrt{7}) is (57)(\sqrt{5} - \sqrt{7}).
  3. Distribute and Simplify Numerator: So we multiply (2+3)/(5+7)(\sqrt{2} + \sqrt{3}) / (\sqrt{5} + \sqrt{7}) by (57)/(57)(\sqrt{5} - \sqrt{7}) / (\sqrt{5} - \sqrt{7}).
  4. Use Difference of Squares for Denominator: In the numerator, we'll use the distributive property: (2+3)×(57)=2×52×7+3×53×7(\sqrt{2} + \sqrt{3}) \times (\sqrt{5} - \sqrt{7}) = \sqrt{2}\times\sqrt{5} - \sqrt{2}\times\sqrt{7} + \sqrt{3}\times\sqrt{5} - \sqrt{3}\times\sqrt{7}.
  5. Finalize Numerator with Perfect Square: Simplify the numerator: 1014+1521\sqrt{10} - \sqrt{14} + \sqrt{15} - \sqrt{21}.
  6. Choose Fraction with Perfect Squares: In the denominator, we'll use the difference of squares: (5+7)×(57)=57(\sqrt{5} + \sqrt{7}) \times (\sqrt{5} - \sqrt{7}) = 5 - 7.
  7. Simplify Fraction with Perfect Squares: Simplify the denominator: 57=25 - 7 = -2.
  8. Simplify Fraction with Perfect Squares: Simplify the denominator: 57=25 - 7 = -2.Now we have (1014+1521)/2(\sqrt{10} - \sqrt{14} + \sqrt{15} - \sqrt{21}) / -2. But we want a perfect square in the numerator.
  9. Simplify Fraction with Perfect Squares: Simplify the denominator: 57=25 - 7 = -2.Now we have 1014+15212\frac{\sqrt{10} - \sqrt{14} + \sqrt{15} - \sqrt{21}}{-2}. But we want a perfect square in the numerator.Let's try a different approach. We'll start with a fraction that has a perfect square when multiplied out. How about a+bab\frac{\sqrt{a} + \sqrt{b}}{\sqrt{a} - \sqrt{b}}, where aa and bb are perfect squares?
  10. Simplify Fraction with Perfect Squares: Simplify the denominator: 57=25 - 7 = -2.Now we have (1014+1521)/2(\sqrt{10} - \sqrt{14} + \sqrt{15} - \sqrt{21}) / -2. But we want a perfect square in the numerator.Let's try a different approach. We'll start with a fraction that has a perfect square when multiplied out. How about (a+b)/(ab)(\sqrt{a} + \sqrt{b}) / (\sqrt{a} - \sqrt{b}), where aa and bb are perfect squares?Let's pick a=4a = 4 and b=1b = 1, so we have (4+1)/(41)(\sqrt{4} + \sqrt{1}) / (\sqrt{4} - \sqrt{1}).
  11. Simplify Fraction with Perfect Squares: Simplify the denominator: 57=25 - 7 = -2.Now we have (1014+1521)/2(\sqrt{10} - \sqrt{14} + \sqrt{15} - \sqrt{21}) / -2. But we want a perfect square in the numerator.Let's try a different approach. We'll start with a fraction that has a perfect square when multiplied out. How about (a+b)/(ab)(\sqrt{a} + \sqrt{b}) / (\sqrt{a} - \sqrt{b}), where aa and bb are perfect squares?Let's pick a=4a = 4 and b=1b = 1, so we have (4+1)/(41)(\sqrt{4} + \sqrt{1}) / (\sqrt{4} - \sqrt{1}).Simplify the fraction: (2+1)/(21)(2 + 1) / (2 - 1).
  12. Simplify Fraction with Perfect Squares: Simplify the denominator: 57=25 - 7 = -2.Now we have (1014+1521)/2(\sqrt{10} - \sqrt{14} + \sqrt{15} - \sqrt{21}) / -2. But we want a perfect square in the numerator.Let's try a different approach. We'll start with a fraction that has a perfect square when multiplied out. How about (a+b)/(ab)(\sqrt{a} + \sqrt{b}) / (\sqrt{a} - \sqrt{b}), where aa and bb are perfect squares?Let's pick a=4a = 4 and b=1b = 1, so we have (4+1)/(41)(\sqrt{4} + \sqrt{1}) / (\sqrt{4} - \sqrt{1}).Simplify the fraction: (2+1)/(21)(2 + 1) / (2 - 1).Now we have 3/13 / 1, which is just (1014+1521)/2(\sqrt{10} - \sqrt{14} + \sqrt{15} - \sqrt{21}) / -200. But that's not a fraction with mixed radicals in the numerator and denominator.

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