Question

determine : 3׳-13ײ+13×-3=0

Answer 1

3׳-13ײ+13×-3=0
-10x²+13x-3=0  

Agora resolve-se pela formula resolvente x=-b+-√b²-4ac tudo a dividir por 2a  

a= -10; b= 13; c= -3  

-10x²+13x-3=0
x= -13+-√13²-4.(-10).(-3)/2.(-10)
x= -13+-√169-120/-20
x= -13+-√49/-20
x= -13+-7/-20
x= -13-7/-20 ou x= -13+7/-20
x= -20/-20 ou x= -6/-20
x= 1 ou x= 6/20