Question

сократите дробь
под буквой е

Answer 1

(N+1)^2/(n+1)(n-4)=(n+1)/(n+4)

Answer 2

(n-4)???

Answer 3

n*2+2n+1=(n+1)(n+1)
n*2+5n+4=(n*2+2n+1)+3n+3=(n+1)(n+1)+3(n+1)=(n+1)(n+1+3)=(n+1)(n+4)

(n+1)(n+1)/(n+1)(n+4)=(n+1)/(n+4)