Question

Understanding Cardano's Formula

score 403 · Answer 1 · 2026-03-25 07:30:10

403

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Understanding Cardano's Formula

Published on 25 Mar 2026 - 7:30

score 112 · Answer 2 · 2026-04-14 10:45:22

112

Views

The correct way of solving for $a$ in $a^2 = b^2$

Published on 14 Apr 2026 - 10:45

score 72 · Answer 3 · 2026-04-14 13:24:20

72

Views

A perplexity over the cubic root.

Published on 14 Apr 2026 - 13:24

score 95 · Answer 4 · 2026-04-15 10:18:32

95

Views

Is $\sqrt{5-2\sqrt{5}}$ in $\mathbb{Q}(\sqrt{5+2\sqrt{5}},\sqrt{2})$?

Published on 15 Apr 2026 - 10:18

score 325 · Answer 5 · 2026-04-16 02:49:21

325

Views

Is the set $A = \left\{ x \in \mathbb{R}\, |\, x^2 \text{ is rational}\right\}$ countable?

Published on 16 Apr 2026 - 2:49

score 387 · Answer 6 · 2026-04-13 20:34:48

387

Views

How does $\sqrt{-\omega^2(\epsilon - j\sigma/\omega)\mu}$ having either a positive or negative sign determine $\alpha_0$ and $\beta_0$?

Published on 13 Apr 2026 - 20:34

score 109 · Answer 7 · 2026-04-11 07:23:21

109

Views

Is an even root of a negative number to the mth power undefined?

Published on 11 Apr 2026 - 7:23

score 303 · Answer 8 · 2026-04-13 12:34:06

303

Views

How to get roots with galley division?

Published on 13 Apr 2026 - 12:34

score 160 · Answer 9 · 2026-04-15 22:59:31

160

Views

Why is √(x²) the same as |x|, instead of ±x?

Published on 15 Apr 2026 - 22:59

score 186 · Answer 10 · 2026-04-11 13:10:45

186

Views

How was the plus-minus sign removed in these steps for proving a half-angle identity for tangent?

Published on 11 Apr 2026 - 13:10

score 203 · Answer 11 · 2026-04-16 03:28:16

203

Views

Squaring $\sqrt{(x-2)^{2}+(y-3)^{2}}=\frac{|5x+6y+5|}{\sqrt{5^{2}+6^{2}}}$ does not lose information?

Published on 16 Apr 2026 - 3:28

score 121 · Answer 12 · 2026-04-15 08:52:21

121

Views

Difficulty evaluating $\sum_{n=1}^\infty\frac{1}{n^2}\sqrt{\alpha n-1}$ for a real $\alpha\gt1$

Published on 15 Apr 2026 - 8:52

score 82 · Answer 13 · 2026-04-09 21:20:42

82

Views

find the $x$ of quadratic equation, such that the squre root of quadratic equation result is integer

Published on 09 Apr 2026 - 21:20

score 95 · Answer 14 · 2026-04-11 01:08:36

95

Views

Does closure under Euclidean distance imply closure under square roots (in this set)?

Published on 11 Apr 2026 - 1:08

score 97 · Answer 15 · 2026-04-14 17:20:45

97

Views

$\sqrt{\sin^{2}(\frac{\alpha}{2})}=\sin(\frac{\alpha}{2})$?

Published on 14 Apr 2026 - 17:20

List Question

Understanding Cardano's Formula

The correct way of solving for $a$ in $a^2 = b^2$

A perplexity over the cubic root.

Is $\sqrt{5-2\sqrt{5}}$ in $\mathbb{Q}(\sqrt{5+2\sqrt{5}},\sqrt{2})$?

Is the set $A = \left\{ x \in \mathbb{R}\, |\, x^2 \text{ is rational}\right\}$ countable?

How does $\sqrt{-\omega^2(\epsilon - j\sigma/\omega)\mu}$ having either a positive or negative sign determine $\alpha_0$ and $\beta_0$?

Is an even root of a negative number to the mth power undefined?

How to get roots with galley division?

Why is √(x²) the same as |x|, instead of ±x?

How was the plus-minus sign removed in these steps for proving a half-angle identity for tangent?

Squaring $\sqrt{(x-2)^{2}+(y-3)^{2}}=\frac{|5x+6y+5|}{\sqrt{5^{2}+6^{2}}}$ does not lose information?

Difficulty evaluating $\sum_{n=1}^\infty\frac{1}{n^2}\sqrt{\alpha n-1}$ for a real $\alpha\gt1$

find the $x$ of quadratic equation, such that the squre root of quadratic equation result is integer

Does closure under Euclidean distance imply closure under square roots (in this set)?

$\sqrt{\sin^{2}(\frac{\alpha}{2})}=\sin(\frac{\alpha}{2})$?

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