8х² - 5х - 3 = 0

D = b² - 4ac = (-5)² - 4 · 8 · (-3) = 25 + 96 = 121

√D = √121 = ±11

х = (-b±√D)/2a

х₁ = (5-11)/(2·8) = (-6)/16 = -3/8 = -0,375 (в десятичных дробях)

х₂ = (5+11)/(2·8) = 16/16 = 1

Ответ: х₁ = -3/8; х₂ = 1.

Verified answer

Ответ:

Объяснение:

8x^2 -5x -3 =0

D = 25 + 96

D=121 (11)

X1 = 5+11/16 = 1

x2 = 5-11/16 = -6/16 = -3/8