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for what values of x: [1" "2" "1][{:...

for what values of x:
`[1" "2" "1][{:(1,2,0),(2,0,1),(1,0,2):}][{:(0),(2),(x):}]=0? `

Text Solution

Verified by Experts

The correct Answer is:
x=-1
We have
`[(1,2,1)][(1,2,0),(2,0,1),(1,0,2)][(0),(2),(x)]=0`
or `[(1+4+1,2+0+0,0+2+2)][(0),(2),(x)]=0`
or `[6(0)+2(2)+4(x)]=0`
or `[4+4x]=[0]`
or `4+4x=0`
or `x=-1`
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