1.

x के किस मान के लिए `[(1,x,1)][(1,3,2),(2,5,1),(15,3,2)][(1),(2),(x)]=0`

Answer» `implies[(1,x,1)][(1,3,2),(2,5,1),(15,3,2)][(1),(2),(x)]=0`
`implies[(1,x,1)][(7+2x),(12+x),(21+2x)]=0`
`implies7+2x+12x+x^(2)+21+2x=0`
`impliesx^(2)+165x+28=0`
`implies(x+14)(x+2)=0impliesx=-2` या `-14`


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