Question

Urgenttttt va roggggg​

Answer 1

Explicație pas cu pas:

a)

${3}^{40} \cdot (6 \cdot 3 + 4 \cdot {3}^{2} + {3}^{3} ) = n \cdot {3}^{40}$

$18 + 4 \cdot 9 + 27 = n$

$\implies n = 81$

b)

${7}^{n} \cdot (7 - 2) = 245$

$5 \cdot {7}^{n} = 245 \iff {7}^{n} = 49$

${7}^{n} = {7}^{2} \implies n = 2$