Discover the best answers at Westonci.ca, where experts share their insights and knowledge with you. Discover in-depth solutions to your questions from a wide range of experts on our user-friendly Q&A platform. Experience the ease of finding precise answers to your questions from a knowledgeable community of experts.

If [tex]$x + y + z = 0$[/tex], then the value of [tex]$x^3 + y^3 + z^3$[/tex] is:

A. [tex][tex]$2xyz$[/tex][/tex]
B. [tex]$xyz$[/tex]


Sagot :

Certainly! Let's explore the given problem step-by-step.

We start with the given equation:
[tex]\[ x + y + z = 0 \][/tex]

We need to find the value of:
[tex]\[ x^3 + y^3 + z^3 \][/tex]

There is a useful algebraic identity for the sum of cubes that we can use here:
[tex]\[ x^3 + y^3 + z^3 - 3xyz = (x + y + z)(x^2 + y^2 + z^2 - xy - yz - zx) \][/tex]

Given that:
[tex]\[ x + y + z = 0 \][/tex]

Substitute [tex]\( x + y + z = 0 \)[/tex] into the equation:
[tex]\[ x^3 + y^3 + z^3 - 3xyz = 0 (x^2 + y^2 + z^2 - xy - yz - zx) \][/tex]

Since anything multiplied by zero is zero:
[tex]\[ x^3 + y^3 + z^3 - 3xyz = 0 \][/tex]

Hence:
[tex]\[ x^3 + y^3 + z^3 = 3xyz \][/tex]

Now, let's compare this result with the given choices:
a. [tex]\( 2xyz \)[/tex]
b. [tex]\( xyz \)[/tex]

Clearly, [tex]\( 3xyz \)[/tex] does not directly match either of these options. The choices provided [tex]\( 2xyz \)[/tex] and [tex]\( xyz \)[/tex] do not directly correspond with the derived result.

Therefore, given the directly available choices and the discrepancy noted, we conclude:
[tex]\[ \text{Given choices do not directly match the identity, further context needed for precise selection.} \][/tex]
Thanks for stopping by. We strive to provide the best answers for all your questions. See you again soon. Thanks for using our platform. We aim to provide accurate and up-to-date answers to all your queries. Come back soon. Thank you for visiting Westonci.ca. Stay informed by coming back for more detailed answers.