if X + Y + Z =0 show that X^3 + Y^3 + Z^3= 3 xyZ (without the help of the formula)
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Hello Mate!
x^3 + y^3 + z^3 - 3xyz = ( x + y + z )( x^2 + y^2 + z^2 - xy - yz - xz )
Now, as x + y + z = 0
x^3 + y^3 + z^3 - 3xyz = 0 ( x^2 + y^2 + z^2 - xy - yz - xz )
x^3 + y^3 + z^3 = 3xyz
Hope it helps☺!✌
x^3 + y^3 + z^3 - 3xyz = ( x + y + z )( x^2 + y^2 + z^2 - xy - yz - xz )
Now, as x + y + z = 0
x^3 + y^3 + z^3 - 3xyz = 0 ( x^2 + y^2 + z^2 - xy - yz - xz )
x^3 + y^3 + z^3 = 3xyz
Hope it helps☺!✌
kritabhi:
ok
can you do it without the help of the formula
I don't think I have done same ques, but formula id needed
is*
oj
ok
So is it correct?
yeah
This question is of chap - 2 from NCERT , ryt
I am also in 9th and have done this question yesterday only
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