2 years ago

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

1 answer:

DIA [1.3K]2 years ago

4 0

Answer:

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