Question

If one zero of the polynomial x2
-4x+k is 2, then find the value of k

Answer 1

put x=2
(2)^2 - 4(2) + k = 0
k = 4

Answer 2

Hey Mate!
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Here is your answer :

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Given,

One zero of the polynomial = 2

Substitute x in the equation.

${x}^{2} - 4x + k = 0 \\ \\ {2}^{2} - 4(2) + k = 0 \\ \\ 4 - 8 + k = 0 \\ \\ - 4 + k = 0 \\ \\ k = 4$

HOPE THIS HELPS U.......