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meraj

· started a discussion

· 1 Months ago

wrong question (Question: 246938.0 )

pls do correct
test is not free
paid 200 rs

Question:
If x + y + z = 2s, then the value of(2s - x)3 – y3– z3 - 3(2s - x)yz is –
Options:
A) 1
B) 0
C) x2 + y2 + z2
D) x + y + z
Solution:

Ans: (b)


Knowledge Expert

· commented

· 1 Months ago

Dear Student,

we fixed ambiguity of this question.
and using identity- x^3 + y^3 + z^3 - 3xyz = (x + y + z)(x^2 + y^2 + z^2 - xy - yz - zx).

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Team Toprankers

meraj

· commented

· 1 Months ago

249 rs
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