Simplifying expressions with surds
Last attempts:The expression $5\sqrt{45} -3\sqrt{20} + \sqrt{245}$ can be written in the form $a\sqrt{ 5 }$. What is the value of $a$?
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The expression $5\sqrt{45} -3\sqrt{20} + \sqrt{245}$ can be written in the form $a\sqrt{ 5 }$. What is the value of $a$?
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