Question

solve the problem by middle term split 8n^2-10n-900​

Answer 1

Answer:

$8 {n}^{2} - 90n + 80n - 900 = 0 \\ 2n(4n - 45) + 20(4n - 45) \\ (4n - 5)(2n + 20) = 0 \\ n = \frac{5}{4} \: or \: n = - 10$