Rationalize a fraction using conjugates
133286
Conjugates of radicals
151389
How do you add two fractions?
53157
Factoring Quadratics
29866
Improper display of parentheses in fraction of fraction
156376
Find the values of $n$ that make the fraction $\frac{2n^{7}+1}{3n^{3}+2}$ reducible.
4967
Fractions with large elements
154080
circular reasoning in proving $\frac{\sin x}x\to1,x\to0$
139897
Simplify with fractional exponents and negative exponents
142008
Find all natural numbers $n$ such that ${(n+1)}^{1/2}-{(n-1)}^{1/2}$ is rational
23315
Solve $\frac{b}{a}=a.b$ in decimal
61914
Using conjugates to find a limit with a cubic root: $\lim_{h\to 0}\frac{\sqrt[3]{h+1}-1}{h}$
128278
How to prevent Round with hidden fractions
150037
Finding the simplest rational in a closed interval
86497
Prove that any rational can be expressed in the form $\sum\limits_{k=1}^n{\frac{1}{a_k}}$, $a_k\in\mathbb N^*$
63804
Proof that every repeating decimal is rational
34374
Simplifying factorials: $\frac{(n-1)!}{(n-2)!}$
143054
Can you raise $\pi$ to a real power to make it rational?