Question

Why does factoring out $\pm$ from an expression introduce a minus sign?

score 54 · Answer 1 · 2018-01-21 12:55:27

54

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Why does factoring out $\pm$ from an expression introduce a minus sign?

Published on 21 Jan 2018 - 12:55

score 175 · Answer 2 · 2018-01-21 16:08:50

175

Views

Find 4 numbers i arithmetic progression

Published on 21 Jan 2018 - 16:08

score 1.1k · Answer 3 · 2026-04-02 01:50:25

1.1k

Views

If $ax^2 - bx + 5 =0$ does not have two distinct real roots, what is the minimum value of $5a + b$?

Published on 02 Apr 2026 - 1:50

score 430 · Answer 4 · 2026-03-25 01:29:05

430

Views

If $x, y \in [0,10]$ then what is the number of solutions $(x, y)$ of the inequation $3^{sec^2x - 1} \sqrt{9y^2-6y+2} \le 1$

Published on 25 Mar 2026 - 1:29

score 347 · Answer 5 · 2026-04-02 01:53:49

347

Views

computing $A_2=\sum_{k=1}^{n}\frac{1}{(z_k-1)^2} $ and $\sum_{k=1}^n \cot^2\left( \frac{k\pi}{n+1}\right)$

Published on 02 Apr 2026 - 1:53

score 168 · Answer 6 · 2026-04-10 10:25:19

168

Views

Derivative of $f \left( g^{-1} (x) \right)$ using only the first principle

Published on 10 Apr 2026 - 10:25

score 76 · Answer 7 · 2026-04-09 02:44:58

76

Views

What is the value of $x_{100}$

Published on 09 Apr 2026 - 2:44

score 376 · Answer 8 · 2026-04-02 04:09:57

376

Views

How to solve the pair of equations $4a-11b+12c=22$ and $a+5b-4c=17$ over the integers?

Published on 02 Apr 2026 - 4:09

score 592 · Answer 9 · 2026-03-24 19:08:56

592

Views

What is the intersection point of functions $f(x) = 8x^2$; $g(x) = 64x \log x$?

Published on 24 Mar 2026 - 19:08

score 101 · Answer 10 · 2018-01-22 02:22:09

The digits 3, 4. 5, and 6 are used to form a four digit code. No repeated digits are allowed. How many codes are possible?

score 43 · Answer 11 · 2018-01-22 03:43:54

43

Views

Transforming a function by taking the absolute value of the input

Published on 22 Jan 2018 - 3:43

score 53 · Answer 12 · 2018-01-22 04:03:24

53

Views

Factor $(x-3)^2-2(x-3)(y+2)-35(y+2)^2$

Published on 22 Jan 2018 - 4:03

score 58 · Answer 13 · 2026-04-09 02:10:17

58

Views

Averages of side and averages of angles in a triangle

Published on 09 Apr 2026 - 2:10

score 112 · Answer 14 · 2026-04-01 12:51:40

112

Views

sign function and absolute value of sin

Published on 01 Apr 2026 - 12:51

score 95 · Answer 15 · 2026-04-09 01:31:02

95

Views

Relating the roots of quadratic to an inverse trigonometric functions' question

Published on 09 Apr 2026 - 1:31

List Question

Why does factoring out $\pm$ from an expression introduce a minus sign?

Find 4 numbers i arithmetic progression

If $ax^2 - bx + 5 =0$ does not have two distinct real roots, what is the minimum value of $5a + b$?

If $x, y \in [0,10]$ then what is the number of solutions $(x, y)$ of the inequation $3^{sec^2x - 1} \sqrt{9y^2-6y+2} \le 1$

computing $A_2=\sum_{k=1}^{n}\frac{1}{(z_k-1)^2} $ and $\sum_{k=1}^n \cot^2\left( \frac{k\pi}{n+1}\right)$

Derivative of $f \left( g^{-1} (x) \right)$ using only the first principle

What is the value of $x_{100}$

How to solve the pair of equations $4a-11b+12c=22$ and $a+5b-4c=17$ over the integers?

What is the intersection point of functions $f(x) = 8x^2$; $g(x) = 64x \log x$?

The digits 3, 4. 5, and 6 are used to form a four digit code. No repeated digits are allowed. How many codes are possible?

Transforming a function by taking the absolute value of the input

Factor $(x-3)^2-2(x-3)(y+2)-35(y+2)^2$

Averages of side and averages of angles in a triangle

sign function and absolute value of sin

Relating the roots of quadratic to an inverse trigonometric functions' question

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