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Find the value of k, if x-1 is a factor ...

Find the value of k, if `x-1` is a factor of `4x^3+3x^2-4x+k`

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`x-1=0,x=1`
`4(1)^3+3(1)^2-4(1)+k=0`
`7-4+k=0`
`k=-3`
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RD SHARMA-FACTORIZATION OF POLYNOMIAL-All Questions
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  18. Find the value of k, if x-1 is a factor of 4x^3+3x^2-4x+k

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