if x=y+z so what will be the value of x^3 -y^3-z^3-3xyz??
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Step-by-step explanation:
answer is in the picture
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Answer:
the answer is
3yz(y+z-x)
Step-by-step explanation:
1) consider x^3-y^3-z^3-3xyz and substitute the given x value that is x=y+z
2) now after the substitution we obtain the following
(y+z) ^3 -y^3- z^3- 3xyz
3) we have the formula for (y+z) ^3 as follows
y^3+ z^3+3yz(y+z)
4) now we substitute the fomula and we obtain
=y^3 + z^3 +3y^2z +3yz^2-y^3-z^3-3xyz
= 3y^2z+3yz^2-3xyz
=3yz(y+z-x)
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