Sagot:
Paliwanag:
Ibinigay:
#f (x) = x ^ 2 + 5x + 5 #
Paraan 2 - Quadratic formula
Tandaan na
#f (x) = ax ^ 2 + bx + c #
may
Ito ay may mga zero na ibinigay ng parisukat na formula:
#x = (-b + -sqrt (b ^ 2-4ac)) / (2a) #
# color (white) (x) = (- (kulay (asul) (5)) - sqrt (kulay (asul) (5)) ^ 2-4 (kulay (asul)) (5)))) / (2 (kulay (asul) (1))) #
#color (white) (x) = (-5 + -sqrt (25-20)) / 2 #
#color (white) (x) = (-5 + -sqrt (5)) / 2 #
#color (white) (x) = -5 / 2 + -sqrt (5) / 2 #