1.

(b) Find the value of m, if `x +2` is a factor of `x^(3) -4x^(2) + 3x - 5m`

Answer» Let `q(x) = x^(3) - 4x^(2) + 3x - 5m`
Given `x +2` is a factor of q(x)
`:. q (-2) = 0`
`rArr (-2)^(3) - 4(-2)^(2) + 3 (-2) - 5m = 0`
`- 8 - 16 - 6 - 5m =0`
`-5m = 30`
`m = -6`


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