If a+b+c=1,ab+bc+ca=-1 and abc=-1. Find a3+b3+c3
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devendranath2004:
the answer will be 1 because it is said to cube 1 and 1 cube is equal to 1
no
how?
because a^3 + b^3 + c^3 is not the same as (a+b+c)^3
anyways i found the answer myself
i want to send u the photo of my answer
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Answer:
The answer will be 1 because it is said to cube 1 in the question and the cube of 1 is 1
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a=1
b=1
c=-1
a^3+b^3+c^3=1+1-1=1
b=1
c=-1
a^3+b^3+c^3=1+1-1=1
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