SOLUTION: What is Square root of negative 72

Algebra ->  Square-cubic-other-roots -> SOLUTION: What is Square root of negative 72      Log On


   

Question 621341: What is
Square root of negative 72
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
What is Square root of negative 72
Write it
sqrt%2872%2A-1%29
extract the square root of -1 which is "i"
i%2Asqrt%2872%29
Factor inside the radical to reveal a perfect square
i%2Asqrt%2836%2A2%29
extract the square root of 36
6i%2Asqrt%282%29