2 years ago

Qual a raiz da equação X²+5X-14=0 ?

Mathematics

1 answer:

ElenaW [278]2 years ago

8 0

Answer:

e) Hence 2, -7 are roots of the equation X² + 5X - 14 = 0

Step-by-step explanation:

given equation : X² + 5X - 14 = 0

⇒ X² + 7X - 2X - 14 = 0

⇒ X·(X + 7) - 2·(X + 7) = 0

⇒ (X + 7)·(X - 2) = 0

⇒ X = -7, X = 2

Hence 2, -7 are roots of the equation X² + 5X - 14 = 0

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