Question

Сократите дробь:
1) b^2+6b+9 ÷ b^2-9
2) 3+3n+3n^2 ÷ n^3-1

Answer 1

$1)frac{(b+3)^{2} }{(b-3)(b+3)}= frac{b+3}{b-3} \ 2) frac{3(n ^{2}+n+1) }{(n-1)*(n ^{2}+n+1)}= frac{3}{n-1}$