What is #sqrt(10) + sqrt(10)# ?
1 Answer
May 1, 2016
Explanation:
A little slower:
#sqrt(10)+sqrt(10) = 1sqrt(10) +1sqrt(10) = (1+1) sqrt(10) = 2 sqrt(10)#
#= sqrt(2^2)sqrt(10) = sqrt(4)sqrt(10) = sqrt(4*10) = sqrt(40)#
I'm not sure what else to say about this except that:
#sqrt(10) + sqrt(10) != sqrt(20)#
#sqrt(a) + sqrt(b) != sqrt(a+b)#
(There are exceptions, e.g.