Respuesta :
Answer:
x = 5, x = -1
Step-by-step explanation:
Quadratic formula: if ax² + bx + c = 0, x = (-b ± √(b² - 4ac))/2a
Plug in: x² - 4x - 5 = 0, x = (4 ± √(16 + 20))/2
Simplify: x = (4 ± 6)/2
Divide: x = 5, x = -1
Answer:
x = 5, x = -1
Step-by-step explanation:
Quadratic formula: if ax² + bx + c = 0, x = (-b ± √(b² - 4ac))/2a
Plug in: x² - 4x - 5 = 0, x = (4 ± √(16 + 20))/2
Simplify: x = (4 ± 6)/2
Divide: x = 5, x = -1
