Question

How to find $f(2)+f^{-1}(5)$ if $f(2x^2+3x+4)=6x^2+9x+20$?

score 49 · Answer 1 · 2016-02-01 12:48:08

49

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How to find $f(2)+f^{-1}(5)$ if $f(2x^2+3x+4)=6x^2+9x+20$?

Published on 01 Feb 2016 - 12:48

score 337 · Answer 2 · 2026-04-07 19:02:14

337

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Why is the solution to $\sqrt{6-5x}=x$ only $x=1$ and not $x=-6$?

Published on 07 Apr 2026 - 19:02

score 42 · Answer 3 · 2016-02-04 00:37:14

I don't understand how the following algebraic equation breaks down. I just can't figure out how this answer is devised.

score 64 · Answer 4 · 2026-04-13 01:39:55

64

Views

Maximums on Quadratic Functions

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score 643 · Answer 5 · 2026-04-11 23:53:06

643

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score 547 · Answer 6 · 2016-02-06 11:21:16

547

Views

If $\alpha,\beta$ are roots of $x^2+px+q=0$ and also of $x^{2n}+p^nx^n+q^n=0$

Published on 06 Feb 2016 - 11:21

score 120 · Answer 7 · 2016-02-06 11:55:32

120

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If the equation $|x^2+4x+3|-mx+2m=0$ has exactly three solutions then the value of m is equal to to?

Published on 06 Feb 2016 - 11:55

score 58 · Answer 8 · 2026-04-11 14:27:41

58

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score 166 · Answer 9 · 2016-02-07 14:21:59

166

Views

$p = \sqrt{1+\sqrt{1+\sqrt{1 + \cdots}}}$; $\sum_{k=2}^{\infty}{\frac{\lfloor p^k \rceil}{2^k}} = ? $

Published on 07 Feb 2016 - 14:21

score 1.1k · Answer 10 · 2026-04-10 23:35:51

1.1k

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Condition for roots to lie in certain intervals

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score 87 · Answer 11 · 2016-02-07 16:44:05

87

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proving an inequality related to $AM\ge GM$

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score 61 · Answer 12 · 2026-04-13 03:53:05

61

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score 485 · Answer 13 · 2026-04-12 19:44:49

485

Views

Why coefficients have to be proportional for two quadratic functions to have the same roots?

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score 74 · Answer 14 · 2026-04-10 05:13:02

74

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finding real roots by way of complex

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score 9.2k · Answer 15 · 2016-02-09 02:49:09

9.2k

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Published on 09 Feb 2016 - 2:49

List Question

How to find $f(2)+f^{-1}(5)$ if $f(2x^2+3x+4)=6x^2+9x+20$?

Why is the solution to $\sqrt{6-5x}=x$ only $x=1$ and not $x=-6$?

I don't understand how the following algebraic equation breaks down. I just can't figure out how this answer is devised.

Maximums on Quadratic Functions

How to prove a solution of equation is rational if another one is rational number?

If $\alpha,\beta$ are roots of $x^2+px+q=0$ and also of $x^{2n}+p^nx^n+q^n=0$

If the equation $|x^2+4x+3|-mx+2m=0$ has exactly three solutions then the value of m is equal to to?

How to solve a quadratic inequality that acts like a quadratic equality?

$p = \sqrt{1+\sqrt{1+\sqrt{1 + \cdots}}}$; $\sum_{k=2}^{\infty}{\frac{\lfloor p^k \rceil}{2^k}} = ? $

Condition for roots to lie in certain intervals

proving an inequality related to $AM\ge GM$

How to expand $x_1^3 + x_2^3$ with the parameters of quadratic equation

Why coefficients have to be proportional for two quadratic functions to have the same roots?

finding real roots by way of complex

Q: Quadratic Division - How to divide two quadratics?

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