please solve this question i really need the solution right now question 13
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13.
Given x + y + z = 0
= > x + y = - z.
On cubing both sides, we get
= > (x + y)^3 = (-z)^3
= > x^3 + y^3 + 3xy(x + y) = -z^3
= >x^3 + y^3 + 3xy(-z) = -z^3
= > x^3 + y^3 - 3xyz = -z^3
= > x^3 + y^3 + z^3 = 3xyz.
Hope this helps!
Given x + y + z = 0
= > x + y = - z.
On cubing both sides, we get
= > (x + y)^3 = (-z)^3
= > x^3 + y^3 + 3xy(x + y) = -z^3
= >x^3 + y^3 + 3xy(-z) = -z^3
= > x^3 + y^3 - 3xyz = -z^3
= > x^3 + y^3 + z^3 = 3xyz.
Hope this helps!
siddhartharao77:
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i don't get it
Kindly clarify ur doubt
thanks bro
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hey here is your answer using identity
I hope it helps!
I hope it helps!
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