if A=[ 1 3] then the determinant A square -
[2 1] 2Ais see the picture
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hey here is your answer
pls mark it as brainliest
Step-by-step explanation:
so first solve this determinant
after solving it we get
A=-5
so thus then
A²-2A
=(-5)²-2×(-5)
=25-(-10)
=25+10
=35
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