Question

IF N(N-1) =110 WHAT IS N​

Answer 1

Answer:

N = 11 and -10

Step-by-step explanation:

$N(N - 1) = 110\\N^{2} - N = 110\\ N^{2} - N - 110 = 0\\ N^{2} - 11N + 10N - 110 = 0\\ N(N-11) + 10(N - 11) = 0\\ (N-11)(N+10)=0\\\\ N-11=0 =>N = 11\\ and \\N+10=0 =>N=-10$