X (x2 + y2 - z2) + y (-x2 - y2 + z2) – z (x2 + y2 – 22). – InterviewSolution

1.

X (x2 + y2 - z2) + y (-x2 - y2 + z2) – z (x2 + y2 – 22).

Answer»

$x^3$ + $xy^2 - xz^2 - yx^2 - y^3 + yz^2 - zx^2 - zy^2 + 22z$

Step-by-step EXPLANATION:

$x^2 \\$ × $x$ = $x^3$

$x$ × $y^2$ = $xy^2$

$x$ × $(-z^2)$ = $-xz^2$

$y$ × $(-x^2)$ = $-yx^2$

$y$ × $(-y^2)$ = $-y^3$

$y$ × $z^2$ = $yz^2$

$-z$ × $x^2$ = $-zx^2$

$-z$ × $y^2 = -zy^2$

$-z$ × $-22 = 22z$

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