Question

Помогите пожаалуйста...!!!!!!!!!!

Answer 1

=1/(a-1)² ; =1/ 27b³c³ ; =(1+a)/a; =1/x³ - 1/x =(1-x²)/x³ ; =1/a² - 1/b² = (b²- a²)/a²b² ;...............=2⁻⁹ · 2⁻³ =2⁻¹² = 1/4096