Question

-xao quadrado +X + 12=0

Answer 1

-x^2 +x +12= 0

delta = 1^2 -4(-1)(12)

delta = 1 + 48

delta = 49

x = (-1 +-√49)/2a

x = (-1 +-7)/-2

x1 = -1 -7/-2

x1 = -8/-2 = 4

x2 = -1 +7 / -2

x2 = 6 / -2 = -3