Question

Methods to prove $\frac{21n + 4}{14n + 3}$ is irreducible for every natural number $n$

score 3.1k · Answer 1 · 2014-09-23 17:48:59

3.1k

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Methods to prove $\frac{21n + 4}{14n + 3}$ is irreducible for every natural number $n$

Published on 23 Sep 2014 - 17:48

score 272 · Answer 2 · 2014-09-25 15:39:09

272

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Equation simplification, can't get it right

Published on 25 Sep 2014 - 15:39

score 319 · Answer 3 · 2014-09-25 15:54:00

319

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$\text{If } |z_1| = |z_2|, \text{ show that } \frac{z_1 + z_2}{z_1-z_2} \text{is imaginary.} $

Published on 25 Sep 2014 - 15:54

score 6.5k · Answer 4 · 2026-03-25 07:46:01

6.5k

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Prove that if $x$ and $y$ are rational numbers and $y\ne 0$, then $x/y$ is a rational number

Published on 25 Mar 2026 - 7:46

score 691 · Answer 5 · 2026-03-28 13:41:49

691

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How would I find the decimal expansion of $1/99^2$

Published on 28 Mar 2026 - 13:41

score 147 · Answer 6 · 2026-03-25 12:28:22

147

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Why is $1 \times 3 \times 5 \times \cdots \times (2k-3) = \frac{(2k-2)!}{2^{(k-1)}(k-1)!}$

Published on 25 Mar 2026 - 12:28

score 283 · Answer 7 · 2014-09-30 11:11:24

283

Views

Show the minimum value for v

Published on 30 Sep 2014 - 11:11

score 384 · Answer 8 · 2026-03-27 19:51:52

384

Views

Fractions and big $O$ notation.

Published on 27 Mar 2026 - 19:51

score 1.3k · Answer 9 · 2026-03-26 06:25:36

1.3k

Views

Convert a fraction to infinite repeating decimal?

Published on 26 Mar 2026 - 6:25

score 161 · Answer 10 · 2014-10-05 05:19:54

161

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What is the meaning of $dy=dx^2$?

Published on 05 Oct 2014 - 5:19

score 117 · Answer 11 · 2026-03-25 05:07:43

117

Views

Sum of positive integers estimating sum of fractions

Published on 25 Mar 2026 - 5:07

score 803 · Answer 12 · 2014-10-08 07:33:52

803

Views

Simplifying a square root fraction

Published on 08 Oct 2014 - 7:33

score 66 · Answer 13 · 2014-10-08 13:48:29

66

Views

The elementary question on sign of Rational numbers

Published on 08 Oct 2014 - 13:48

score 116 · Answer 14 · 2026-03-28 09:45:37

116

Views

Is there an example to demonstrate why $\frac{1}{(1/2)}$ equals $2$?

Published on 28 Mar 2026 - 9:45

score 154 · Answer 15 · 2026-03-27 10:12:07

154

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Is there a simple closed form of $|\alpha(\sqrt{n}-\left\lfloor \sqrt{n} \right \rfloor) + \beta(\sqrt{n}-\left\lfloor \sqrt{n} \right \rfloor)|$?

Published on 27 Mar 2026 - 10:12

List Question

Methods to prove $\frac{21n + 4}{14n + 3}$ is irreducible for every natural number $n$

Equation simplification, can't get it right

$\text{If } |z_1| = |z_2|, \text{ show that } \frac{z_1 + z_2}{z_1-z_2} \text{is imaginary.} $

Prove that if $x$ and $y$ are rational numbers and $y\ne 0$, then $x/y$ is a rational number

How would I find the decimal expansion of $1/99^2$

Why is $1 \times 3 \times 5 \times \cdots \times (2k-3) = \frac{(2k-2)!}{2^{(k-1)}(k-1)!}$

Show the minimum value for v

Fractions and big $O$ notation.

Convert a fraction to infinite repeating decimal?

What is the meaning of $dy=dx^2$?

Sum of positive integers estimating sum of fractions

Simplifying a square root fraction

The elementary question on sign of Rational numbers

Is there an example to demonstrate why $\frac{1}{(1/2)}$ equals $2$?

Is there a simple closed form of $|\alpha(\sqrt{n}-\left\lfloor \sqrt{n} \right \rfloor) + \beta(\sqrt{n}-\left\lfloor \sqrt{n} \right \rfloor)|$?

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