Question

7n^2-67n-30=0 find n by factorisation method​

Answer 1

$\huge\purple{Required \: Answer :}$

Given :

$7 {n}^{2} - 67n - 30 = 0 \\ 7 {n}^{2} - 70n + 3n - 30 = 0 \\ (7 {n}^{2} - 70n) + (3n - 30) = 0 \\ 7n(n - 10) + 3(n - 10) = 0 \\ (n - 10) (7n + 3) = 0 \\ n = 10 \: or \: n = \frac{ - 3}{7}$

$\huge{n = 10 \: or \: n = \frac{-3}{7}}$