Question

40n^+n-6
$40n ^{2} + n - 6$

Answer 1

${40n}^{2} + n - 6 \\ = 40 {n}^{2} + 16n - 15n - 6 \\ = 8n (5n + 2) - 3(5n + 2) \\ = (8n - 3)(5n + 2)$