# Austrailan Mathematics Competition Warmup

Algebra Level 1

Which of the following is equal to $$\frac { 1 }{ 2\sqrt { 5 } -\sqrt { 3 } }$$?

1) $$\frac { 2\sqrt { 5 } -\sqrt { 3 } }{ 7 }$$

2) $$\frac { 2\sqrt { 5 } +\sqrt { 3 } }{ 17 }$$

3) $$\frac { 2\sqrt { 5 } -\sqrt { 3 } }{ 17 }$$

4) $$\frac { 2\sqrt { 5 } +\sqrt { 3 } }{ 7 }$$

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