Question

Find the value of n if n(n-1)(n+2)=210​

Answer 1

$\large{ \bold{n(n - 1)(n + 1) = 210 }}\\ \\ \large{ \bold{ (n - 1)(n)(n + 1) = 3 \times 7 \times 10 }}\\ \\ \large{ \bold{(n - 1)(n)(n + 1) = 5 \times 6 \times 7 }}\\ \\ \large{ \bold{ n = 6}}$

hope it helps.

Answer 2

$\large{ \bold{n(n - 1)(n + 1) = 210 }}\\ \\ \large{ \bold{ (n - 1)(n)(n + 1) = 3 \times 7 \times 10 }}\\ \\ \large{ \bold{(n - 1)(n)(n + 1) = 5 \times 6 \times 7 }}\\ \\ \large{ \bold{ n = 6}}$

hope it helps.