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Find the value of `lambda` for which the homogeneous system of equations: `2x+3y-2z=0` `2x-y+3z=0` `7x+lambday-z=0` has non-trivial solutions. Find the solution.

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We have given: the system of equations `2x+3y-2z=0` `2x-y+3z=0` `7x+lambday-z=0` has a non-trivial solution
Then we have to find `lambda`
Let
`A=|(2,3,-2),(2,-1,3),(7,lambda,-1)|`
...
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