Question

No 7 пожалуйста даю 20 баллов!

Answer 1

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