If x = 4 is the zero of the polynomial p(x) = 2x + k then find k.
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if x=4 is a zero of p(x)
then p(x) = 2x+ k , can be written as
p(4) = 2(4) +k
{as 4 is a zero of p(x) , p(4)= 0}
0 = 8+k
k= -8
therefore the value of k in p(x) is 4
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