List questions from algebra-precalculus

Published on 25 Mar 2026 - 15:17

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Prove that when $x>0$, $(x+1/2)^3>3x^2+1/8$ without graphing

Published on 04 Feb 2018 - 3:11

1.2k

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Finding a Way to Describe the Infinitely Many Solutions of Tangent of an Angle

Published on 31 Mar 2026 - 23:55

199

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Solve the inequality $|x^2-3x-15|<2x^2-x$

Published on 24 Mar 2026 - 22:09

13.6k

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Inverse normalization function

Published on 04 Feb 2018 - 9:43

101

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If $f(x)=f^{-1}(x)$ Does it mean $f(x)=x$ or $f(x)=-x$

Published on 24 Mar 2026 - 22:07

165

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Evaluate $\lim_{ n \to \infty} \sum_{r=2n+1}^{3n} \frac{n}{r^2-n^2}$

Published on 25 Mar 2026 - 19:04

67

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Generic formula for the power of a finite sum (aka distributive law)?

Published on 25 Mar 2026 - 23:39

330

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Reciprocal sum with 2017

Published on 08 Apr 2026 - 17:34

193

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x odd then exists y such that $x^2 = 8y+1$

Published on 04 Feb 2018 - 21:44

118

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Which one is correct $\sum_{n=1}^{k} 2^{n}× n^2$ or $\sum_{n=1}^{k} (2^{n}× n^2)$?

Published on 25 Mar 2026 - 20:36

89

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does $(f(x)+k)^2$ = $f(x)^2+2kf(x)+k^2$

Published on 25 Mar 2026 - 11:25

285

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Why is the interest formula $A = P(1 + \frac{r}{m})^{tm}$ and not $A = P(1 + r)^{tm}$?

Published on 05 Feb 2018 - 0:34

70

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How to simplify a constant to a root power?

Published on 09 Apr 2026 - 15:50

45

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Problem graphing equations

Published on 11 Apr 2026 - 6:05

List Question

For an equality of two fractions, each has a different domain; how?

Prove that when $x>0$, $(x+1/2)^3>3x^2+1/8$ without graphing

Finding a Way to Describe the Infinitely Many Solutions of Tangent of an Angle

Solve the inequality $|x^2-3x-15|<2x^2-x$

Inverse normalization function

If $f(x)=f^{-1}(x)$ Does it mean $f(x)=x$ or $f(x)=-x$

Evaluate $\lim_{ n \to \infty} \sum_{r=2n+1}^{3n} \frac{n}{r^2-n^2}$

Generic formula for the power of a finite sum (aka distributive law)?

Reciprocal sum with 2017

x odd then exists y such that $x^2 = 8y+1$

Which one is correct $\sum_{n=1}^{k} 2^{n}× n^2$ or $\sum_{n=1}^{k} (2^{n}× n^2)$?

does $(f(x)+k)^2$ = $f(x)^2+2kf(x)+k^2$

Why is the interest formula $A = P(1 + \frac{r}{m})^{tm}$ and not $A = P(1 + r)^{tm}$?

How to simplify a constant to a root power?

Problem graphing equations

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