Find the value of k, if t+ 4 is a factor of 2t + kt -1.
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let p(t) = 2t + kt -1
If t+4 is a factor of p(t)
so t= -4
putting t= -4
p(-4) = 2(-4) + k(-4) -1
0= -8 -4k -1
0= -9 -4k
4k= -9
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