Question

n^2-5n+1
Допоможіть, будь ласка!!!!!!!

Answer 1

$n^2-5n+1=0\\\\D=25-4=21\\\\n_1=\frac{5-\sqrt{21}}{2}\; \; ,\; \; n_2=\frac{5+\sqrt{21}}{2}\\\\n^2-5n+1=\Big(n-\frac{5-\sqrt{21}}{2}\Big)\Big(n-\frac{5+\sqrt{21}}{2}\Big)$