Skew-symmetric: aij=−aji.
a12=2,a21=y⇒y=−2.
a13=−3,a31=z⇒z=3.
a23=−1,a32=x⇒x=1.
x3+y3+z3−3xyz=1−8+27−3(1)(−2)(3)=20+18=38.
CUET UG 2022 — Mathematics Algebra
If A=0yz20x−3−10 is skew symmetric matrix, then x3+y3+z3−3xyz is equal to :
Held on 6 Aug 2022 · Verified 13 Jul 2026.
−2
−1
38
13
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