If ‘i’was invented to take the square roots of negatives, why can’t we invent a concept to divide by zero?
22310
Why not to extend the set of natural numbers to make it closed under division by zero?
70974
How can zero divided by $i$ be $2\pi$?
61673
Could I define 0^0 to be 1?
39170
Existence of square root
97952
Square root of 1 is (not) -1
37376
what is the argument of 0?
122076
A one line proof that one is zero using Mathematica 10
41204
Why do I get one extra wrong solution when solving $2-x=-\sqrt{x}$?
64262
cubic root of negative numbers
44476
Can we ever get an irrational number by dividing two rational numbers?
115511
Why do we invert then multiply when dividing fractions?
2959
Prove $0! = 1$ from first principles
150624
Why does the square root of a square involve the plus-minus sign?
120844
Intuitive explanation of unit root
56169
What mistakes, if any, were made in Numberphile's proof that $1+2+3+\cdots=-1/12$?
48035
Prove that square root of 2 is irrational using the principle of Mathematical Induction
68804
Writing your own square root function