What's wrong about $\sqrt{10} = \sqrt{9 + 1} = \sqrt{9} + \sqrt{1} = 3 + 1 = 4$?
112368
Is there a rule for $\sqrt{a+b}$?
142470
$\mathbb{Q}(\sqrt{p},\sqrt[3]{q})= \mathbb{Q}(\sqrt{p}\cdot \sqrt[3]{q})$ ??
142401
Where's the problem in this equation? Resulting in $4 = 5$
81822
How many integers between $1$ and $10^4$ contain exactly one $8$ and one $9$?
73277
Prove $[\sqrt{x}+\sqrt{x+1}]=[\sqrt{4x+2}], x \in \Bbb N$
56327
How to find the square root of a permutation
41204
Why do I get one extra wrong solution when solving $2-x=-\sqrt{x}$?
110661
When does $\sqrt{a b} = \sqrt{a} \sqrt{b}$?
116649
Value of: $ \frac {1} {\sqrt {4} + \sqrt {5}} + \frac {1} {\sqrt {5} + \sqrt {6}} + ... + \frac {1} {\sqrt {80} + \sqrt {81}}$
1522
Is $\sqrt{64}$ considered $8$? or is it $8,-8$?
115976
$\mathbf{Q}[\sqrt 5+\sqrt[3] 2]=\mathbf{Q}[\sqrt 5,\sqrt[3] 2]$?
56802
Why $\sqrt[3]{{2 + \sqrt 5 }} + \sqrt[3]{{2 - \sqrt 5 }}$ is a rational number?
138193
Why is $\sqrt {12} = 2 \sqrt 3$?
121052
Where is the mistake? $-1=(-1)^{2/2}=\left(\left (-1\right)\displaystyle ^2\right)^{1/2}=1^{1/2}=\sqrt 1=1$
46401
Value of $\frac{\sqrt{10+\sqrt{1}}+\sqrt{10+\sqrt{2}}+\cdots+\sqrt{10+\sqrt{99}} }{\sqrt{10-\sqrt{1}}+\sqrt{10-\sqrt{2}}+\cdots+\sqrt{10-\sqrt{99}}}$
103545
Prove "casting out nines" of an integer is equivalent to that integer modulo 9
124248
$1+\frac {1}{4}(1+\frac {1}{4}) +\frac {1}{9}(1+\frac {1}{4} +\frac {1}{9})+....$