Question

if minus 4 is a zero of a polynomial x² -x-(2+k) then find the value of key a) 4 b) 5 c) 6 d) 9

Answer 1

Answer:

option c

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Answer 2

Answer:

i.e after putting -4 in polynomial, it become zero

$so \: {( - 4)}^{2} - ( - 4) - (2 + k) = 0$

$16 + 4 - 2 - k = 0$

$k = 18$