Kingullermi a, b, c nipiliurpataanngitsumi a+b+c=2, ab+ac+bc=-7, abc=-14. Kingorna a, b, c-p nutaana kingusinnera?
Ikiorneq ilisarnissaat, tunngaviussaq Vieta formulat. Tassa, a, b, c kingornaatut sanerinut, a+b+c=2, ab+ac+bc=-7, abc=-14, tunngasut a, b, c x^3 - 2x^2 - 7x + 14 = 0, Vieta formulat missaartinik. 
Kingusinnerpaat, sulaffiut:
x^3 - 2x^2 - 7x + 14 = 0
= (x^3 - 7x) - (2x^2 - 14)
= x(x^2 - 7) - 2(x^2 - 7)
= (x-2)(x^2 - 7)
Tassa, ikiorneq x=2, x=sqrt(7), x=-sqrt(7). Suliaqatigalugu, ikiorneq, sqrt(7)