kismatmahajan kismatmahajan

27-06-2021
Mathematics

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if a + b + c = 1, ab + bc + ca = -1 and abc = -1. find the value of a³+b³+c³

Respuesta :

27-06-2021

Answer:

1

Step-by-step explanation:

→ If we know that 3 numbers need to multiply to make -1, it must be

1, 1 and -1

→ Then we just substitute this into a³ + b³ + c³

1³ + 1³ + (-1)³ = 2 - 1 = 1

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