What Is The Square Root Of 40 Simplified?

40=2*2*2*5
    =2²*2*5
square root (40)= square root (2² *2*5)
  =2square root(2*5)
  =2square root(10) 

√40=√2 *2 *2 *5  =2√10  =  6.3246

40 = 5*2³, so the best you can do by factoring out squares is 2*sqrt[10]

Simplify the 3 root of 7 and the 9th root of 7