New posts in Radicals

When going from $(x+2)^2=5$ to $x+2=\pm \sqrt{5}$, why isn't there also a $\pm(x+2)$?

Rationalize the denominator of $\frac{\sqrt{7\sqrt{3}+4\sqrt{5}}}{\sqrt{7\sqrt{3}-4\sqrt{5}}}$

Is taking square root of both parts of equation in this way is an equivalent transformation of the equation?

Derivative when $(\sqrt{x})^2$ is involved?

Prove that you can't write $\sqrt[3]{4}$ like $a+b\sqrt[3]{2}$

If $x = \frac{\sqrt{111}-1}{2}$, calculate $(2x^{5} + 2x^{4} - 53x^{3} - 57x + 54)^{2004}$.

Using the fact that $\sqrt{n}$ is an irrational number whenever $n$ is not a perfect square, show $\sqrt{3} + \sqrt{7} + \sqrt{21}$ is irrational.

Converting an equation based on square roots

Why isn't the definition of absolute value applied when squaring a radical containing a variable?

How to solve decics like $x^{10}+100x^2+160x+64=0$ having Galois group 10T33?