Question

√45-3√20+4√5
$\sqrt{45 - 3 \sqrt{20 + 4 \sqrt{5} } }$
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Answer 1

Step-by-step explanation:

$\sqrt{45) - 3 \sqrt{20) + 4 \sqrt{5} } }$

root45-3root20+4root5

root9x5-3root5x4+4root5

3root5-6root5+4root5

the answer will be

-3root5+4root5

=root5 is the answer