Simplifying expressions with surds
Last attempts:The expression $4\sqrt{245} -5\sqrt{20} + \sqrt{80}$ can be written in the form $a\sqrt{ 5 }$. What is the value of $a$?
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The expression $4\sqrt{245} -5\sqrt{20} + \sqrt{80}$ can be written in the form $a\sqrt{ 5 }$. What is the value of $a$?
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