Simplify this equation if $x$ is negative
3712
Why $\sqrt{-1 \cdot {-1}} \neq \sqrt{-1}^2$?
99843
How to simplify $ \sum_{k=0}^{\infty} \binom{k + r - 1}{k} x^k$
25518
How can I solve the equation $x^3-x-1 = 0$?
118024
Simplify the expression $\binom{n}{0}+\binom{n+1}{1}+\binom{n+2}{2}+\cdots +\binom{n+k}{k}$
115213
How to simplify $\sqrt[3]{7+5\sqrt{2}}+\sqrt[3]{7-5\sqrt{2}}$
10222
Simplify $\sum (x_i- \mu)^2$
152074
How to find out the global minimum of the following expression
131232
Simplifying the expression of a product of inner products
150453
How do I display an expression with negative powers?
68434
Typesetting of negative versus minus?
44856
Can I simplify (solve) a certain DifferenceRoot expression?
50875
How to reduce expressions with complex coefficients in the form of a+0.*I
64262
cubic root of negative numbers
56170
Solve a complex equation symbolically?
91881
How solve this equation
127431
What is the equation for a string fixed at both ends without simplifying assumptions?
124581
Solving $x^2 - 1 = e^x$