Question

No 7 пожалуйста даю 20 баллов!

Answer 1

$1)frac{6^{n+2} +6^{n+4} }{37}=frac{6^{n+2}(1+6^{2})}{37} =frac{6^{n+2}*37 }{37}=6^{n+2}\\2)frac{x^{4}+x^{9}}{x^{2}+x^{-3}}=frac{x^{4}(1+x^{5})}{x^{2}+frac{1}{x^{3}}}=frac{x^{4}(1+x^{5})}{frac{x^{5}+1 }{x^{3}}} =frac{x^{3}*x^{4}*(1+x^{5})}{1+x^{5} }=x^{7}$