Question

Simplify 7√3 - 4√27 + 5√243

Answer 1

7 rootof(3)-4 rootof(27)+5 rootof(243)
 rootof(27)=3 rootof(3)
 rootof(243=9 rootof(3)
7 rootof(3)-4(3rootof(3))+5(9rootof(3))
7rootof(3)-12rootof(3)+45rootof(3)
=40rootof(3)

Answer 2

hey friend here is your answer

7✓3-4✓9×3+5✓3×3×3×3×3
7✓3-12✓3+45✓3
✓3(7-12+45)=✓3(-12+52)=40✓3

hope it's helps