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Question
If `|[x+1,x-1],[x-3,x+2]|=|[4,-1],[1,3]|`, then write the value of x.
Solution
`|[x+1,x-1],[x-3,x+2]|=|[4,-1],[1,3]|`
`(x+1)(x+2)-(x-1)(x-3)=12+1`
`x^2+3x+2-[x^2-4x+3]=13`
`7x-1=13`
x=2
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