Why is $| √2 - 1| = √2-1$ and $|3-π| = π - 3$?
96805
Why is the Absolute Value of $3-π$ equal to $π - 3$
54030
Square and square root and negative numbers
97952
Square root of 1 is (not) -1
102138
Why does $\sqrt{x^2}$ seem to equal $x$ and not $|x|$ when you multiply the exponents?
28347
Prove that $\sqrt 2 + \sqrt 3$ is irrational
17707
Why is ${x^{\frac{1}{2}}}$ the same as $\sqrt x $?
121052
Where is the mistake? $-1=(-1)^{2/2}=\left(\left (-1\right)\displaystyle ^2\right)^{1/2}=1^{1/2}=\sqrt 1=1$
60261
Is $\sqrt{x^2}=|x|$ or $=x$? Isn't $(x^2)^\frac12=x?$
41204
Why do I get one extra wrong solution when solving $2-x=-\sqrt{x}$?
155148
Why is $\sin 30^\circ=\frac{1}{2}$
83290
How is the value of $\pi$ ( Pi ) actually calculated?
140086
Does $3-4+1$ equal $0$ or $-2$.. or maybe $2$?
81875
why is $\sqrt{-1} = i$ and not $\pm i$?
46353
Proof that $\cos(\pi/3)=1/2$
41645
Checking my understanding: $1 - 1 + 1 - 1 + 1 - ... = \frac{1}{2}$
19
Why is the square root of a sum not equal to the square root of each its addends?
84017
Is $\sqrt[3]{2}$ contained in $\mathbb{Q}(\zeta_n)$?