Question

simplify the sword 9 by 7 root 4 1280​

Answer 1

Answer:

MADHANSCTS Ace

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

= \sqrt{9*5} - 3 \sqrt{4*5} +4 \sqrt{5}

= 3\sqrt{5} - 6 \sqrt{5} +4 \sqrt{5}

= \sqrt{5}

4.5