If \( \frac{1-x}{2+x}=\frac{x}{2} \), what is the value of \( x^{2}+4 x ? \) A 0 B 1 C 2 E 3

Which expressions are equivalent to the given expression? \( 5 \log _{10} x+\log _{10} 20-\log _{10} 10 \)

Find the value of \( m \) if \( \alpha+\beta=-2 \). (b) Seterusnya, bentukkan persamaan kuadratik dengan punca-punca \( \alpha \) dan \( \beta \). Hence, form a quadratic equation with roots \( \alpha \) and \( \beta \).

Encuentra el resultado utilizando la propiedad de potencias: \( (a^{2b})^{3} \)

What is the solution to the equation? \( \sqrt[3]{2 x+5}=5 \) A. 240 B. 65 ( \( ) 60 \) D. 6 D. 5

1. Найдите т \( y=x^{3}-48 x+14 \)