Question

am si eu nevoie urgent dau coroana termen pana sambata!!!!​

Answer 1

Explicație pas cu pas:

a)

${3}^{ - 2001 - ( - 1999)} = {3}^{ - 2001 + 1999} = {3}^{ - 2} = \frac{1}{ {3}^{2} } = \frac{1}{9}$

b)

$( { \frac{1}{ {10}^{4} }) }^{4} \times { ({10}^{2} )}^{ - 5} \times {10}^{26} = \\ \frac{ 1 }{ {10}^{16} } \times {10}^{ - 10} \times {10}^{26} = \\ {10}^{ - 16} \times {10}^{ - 10} \times {10}^{26} = \\ {10}^{ - 16 + ( - 10) + 26} = {10}^{ - 16 - 10 + 26} = \\ {10}^{0} = 1$