Mircea

Member for 6 years, 4 months
Last seen more than a month ago

Zürich, Switzerland

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algebra-precalculus

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4

If $\frac{1}{a+3}+\frac{1}{b+4}+\frac{1}{c+5}=\frac{7}{12}$ for positive integer $a$, $b$, $c$, then find $\frac{a}{a+3}+\frac{b}{b+4}+\frac{c}{c+5}$

Feb 1, 2020

2

Find all angles in a triangle, given 2 internal 90deg angles and segment equality.

Mar 7, 2020

2

Solve for natural numbers: $(2a+3)(3a+4) = 35^b$

Feb 8, 2021

0

Find angle in quadrilateral

Jul 17, 2021

0

Prove that $10^{(n+k)} - 10 ^ n $can be written as sum of $18k$ perfect (nonzero) squares

May 3, 2020

Answers

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3

Inequality with mean inequality

Dec 27, 2020

1

Find all angles in a triangle, given 2 internal 90deg angles and segment equality.

Mar 7, 2020

0

Prove that $10^{(n+k)} - 10 ^ n $can be written as sum of $18k$ perfect (nonzero) squares

May 3, 2020

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algebra-precalculus

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cauchy-schwarz-inequality

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a.m.-g.m.-inequality

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inequality

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euclidean-geometry

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