Question

the root of x²-5x-24=0

Answer 1

Answer:

- 3  & 8

Step-by-step explanation:

⇒ x^2 - 5x - 24 = 0

⇒ x^2 - (8 - 3)x - 24 = 0

⇒ x^2 - 8x + 3x - 24 = 0

⇒ x(x - 8) + 3(x - 8) = 0

⇒ (x - 8)(x + 3) = 0

⇒ x - 8 = 0    or  x + 3 = 0

⇒ x = 8         or   x = - 3

Answer 2

Answer:

x²-5x-24=0

x²-(8-3)x-24=0

x²-8x+3x-24=0

x(x-8)+3(x-8)=0

(x-8)(x+3)=0

Either, or,

x-8=0 x+3=0

x=8 x=-3