Question

a^n+1•a•a^3n. 15 баллов.

Answer 1

${a}^{n} + 1 \times a \times {a}^{3n} = {a}^{n} (1 + a \times {a}^{2n} ) \\ = {a}^{n} (1 + {a}^{2n + 1} )$