Find the limits in Exercises 13–24 by

Chapter 13, Problem 19E

(choose chapter or problem)

Find the limits in Exercises 13–24 by rewriting the fractions first.

<math xmlns="http://www.w3.org/1998/Math/MathML"><munder><mi>lim</mi><munder><mrow><mfenced><mrow><mi mathvariant="normal">x</mi><mo>,</mo><mi mathvariant="normal">y</mi></mrow></mfenced><mo>&#x2192;</mo><mfenced><mrow><mn>2</mn><mo>,</mo><mn>0</mn></mrow></mfenced></mrow><mrow><mn>2</mn><mi mathvariant="normal">x</mi><mo>-</mo><mi mathvariant="normal">y</mi><mo>&#x2260;</mo><mn>4</mn></mrow></munder></munder><mfrac><mrow><msqrt><mn>2</mn><mi>x</mi><mo>&#xA0;</mo><mo>-</mo><mo>&#xA0;</mo><mi>y</mi></msqrt><mo>&#xA0;</mo><mo>-</mo><mo>&#xA0;</mo><mn>2</mn></mrow><mrow><mn>2</mn><mi>x</mi><mo>&#xA0;</mo><mo>-</mo><mo>&#xA0;</mo><mi>y</mi><mo>&#xA0;</mo><mo>-</mo><mo>&#xA0;</mo><mn>4</mn></mrow></mfrac></math>

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