If A=\left[\begin{array}{cc}-1 & 0 \ 0 & 2]\end{array}, then A^3-A^2 is equal to

EAMCET Engineering 2005 Solved Paper

Section: Mathematics

Question : 100 of 160

Marks: +1, -0

If A=[

−1	0
0	2

], then A3−A2 is equal to

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−2	0
0	4