Question

Smilify root 45 - 3 root 20 + 4 root 5

Answer 1

√45-3√20+4√5=√3.3.5-3√2.2.5+4√5=3√5-3.2√5+4√5=7√5-6√5=√5

Answer 2

[tex] \sqrt{45} - 3 \sqrt{20} + 4 \sqrt{5} [/tex]

=now we can write it as , $3 \sqrt{5} - 6 \sqrt{5} + 4 \sqrt{5}$

=$\sqrt{5}$