Question

Scrieti o ecuatie de gradul 2 cuu solutiile
1 si 3

Answer 1

$Ecuatia~de~gradul~2~cu~solutiile~reale~x_1~si~x_2~are~forma: \\ \\ \boxed{x^2-Sx+P=0},~unde~S=x_1+x_2~si~P=x_1 \cdot x_2. \\ \\ In~cazul~nostru~S=1+3=4~si~P=1 \cdot 3=3. \\ \\ Deci~ecuatia~este \boxed{x^2-4x+3=0} ~ .$