Why $(x^3-8)/(x-2)$ is not defined at $x=2$??
49368
Why does factoring eliminate a hole in the limit?
122948
$x^{x^{x^{\dots}}}=2$, what is the value of $x$?
94700
Integer solutions for $x^3+2=y^2$?
148876
What is the meaning of $\mathbf{Q}(\sqrt{2},\sqrt{3})$
27888
Why is $|x|$ not differentiable at $x=0$?
23128
Why aren't logarithms defined for negative $x$?
147453
How do I specify 8^(a - b) in math mode
149254
Solving $y^3=x^3+8x^2-6x+8$
156266
Solving $|x-2| + |x-5|=3$
19979
Why does $p^2+8$ prime imply $p^3+4$ prime
27898
Difference between $\sqrt{x^2}$ and $(\sqrt{x})^2$
34913
Why does basic algebra provide one value for $x$ when there should be two?
37068
How could it possible to factorise $x^8-1$ in product of irreducibles in the rings $(\mathbb{Z}/2\mathbb{Z})[x]$ and $(\mathbb{Z}/3\mathbb{Z})[x]$?
75092
Initial value problem $x'=x^{2/3}$
46010
Why don't we define division by zero as an arbritrary constant such as $j$?
102138
Why does $\sqrt{x^2}$ seem to equal $x$ and not $|x|$ when you multiply the exponents?
84315
Why can't polynomials have negative exponents or division by a variable