New posts in algebra-precalculus

Solving $x!=n$ without a calculator for large $n$

Find the roots of the polynomial $x^4+2x^3-x-1=0$.

A simple proof that $\bigl(1+\frac1n\bigr)^n\leq3-\frac1n$?

Find the $\frac mn$ if $T=\sin 5°+\sin10°+\sin 15°+\cdots+\sin175°=\tan \frac mn$

How to solve an exponential and logarithmic system of equations?

Square Root of $x^2$

Why does basic algebra provide one value for $x$ when there should be two?

How can I write an equation that matches any sequence?

My Daughter's 4th grade math question got me thinking

Solving $x + 3^x < 4$ analytically

Integration of rational of polynomials

A system of equations with 5 variables: $a+b+c+d+e=0$, $a^3+b^3+c^3+d^3+e^3=0$, $a^5+b^5+c^5+d^5+e^5=10$

College algebra Books

Inequality with two absolute values

Extraneous solution when solving $x^2+x+1=0$ by getting $x^2=1/x$

A highschool factoring problem

Prove that $x^2<\sin x \tan x$ as $x \to 0$ [duplicate]

Solving Equation through inequalities.

Is $\large \frac {\pi}{e}$ rational, irrational, or trandescendal?

How to find the sum of the following series