the root of x²-5x-24=0
Answers
Answered by
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
Answered by
4
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
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