Simplify the expression completely: 45+80−20\sqrt{45}+\sqrt{80}-\sqrt{20}

9. Roots, Radicals, and Complex Numbers - Part 1 of 2!

9. Roots, Radicals, and Complex Numbers / Adding and Subtracting Radicals / Problem 8

Problem 8

Simplify the expression completely: $\sqrt{45} + \sqrt{80} - \sqrt{20}$

$the square root of 105$

$9 the square root of 5$

$21 the square root of 5$

$5 the square root of 5$