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New posts in algebra-precalculus
Average of all 6 digit numbers that contain only digits $1,2,3,4,5$
algebra-precalculus
How would multiplying money work?
algebra-precalculus
unit-of-measure
Does there exist a right triangle with area 7 and perimeter 12?
algebra-precalculus
geometry
Proof that there is no closed form solution
algebra-precalculus
Solve equations $\sqrt{t +9} - \sqrt{t} = 1$
algebra-precalculus
radicals
Is 1100 a valid state for this machine?
algebra-precalculus
contest-math
divisibility
Taking Calculus in a few days and I still don't know how to factorize quadratics
algebra-precalculus
factoring
quadratics
Intuitively, what exactly does the ellipse equation mean?
algebra-precalculus
conic-sections
intuition
Use a quadratic equation to find two consecutive even integers if their product is $168$
algebra-precalculus
quadratics
Why must a radical be isolated before squaring both sides?
algebra-precalculus
radicals
Solve $4^{9x-4} = 3^{9x-4}$
algebra-precalculus
Four variables inequality proof [closed]
calculus
algebra-precalculus
inequality
proof-writing
constraints
Applying " divide by highest denominator power" to $ f(x)= \frac {4x+1} {\sqrt{x^2+9}}$ ( Context : limits at infinity and asymptotes).
algebra-precalculus
limits
soft-question
asymptotics
If $(a+b)(a+c)(b+c)=8abc$ prove $a=b=c$
algebra-precalculus
Find angle of rotation of hyperbola given two asymptotes
algebra-precalculus
conic-sections
Inequality involving ceiling of square
algebra-precalculus
elementary-number-theory
ceiling-and-floor-functions
Prove that $\frac{a_1^2}{a_1+a_2}+\frac{a_2^2}{a_2+a_3}+ \cdots \frac{a_n^2}{a_n+a_1} \geq \frac12$
algebra-precalculus
inequality
contest-math
cauchy-schwarz-inequality
a.m.-g.m.-inequality
Minimize $\left(a+\frac1a\right)\left(a+\frac1b\right)$+$\left(b+\frac1b\right)\left(b+\frac1c\right)$+$\left(c+\frac1c\right)\left(c+\frac1a\right)$
algebra-precalculus
optimization
contest-math
Expressing the maximum of several variables using elementary functions [duplicate]
algebra-precalculus
Find the sum $\frac{1}{\sqrt{1}+\sqrt{2}} + \frac{1}{\sqrt{2}+\sqrt{3}} + ...+ \frac{1}{\sqrt{99}+\sqrt{100}}$
algebra-precalculus
summation
radicals
telescopic-series
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