Question

If 4 is a root of the quadratic equation x2 + 2x + k = 0, then find the value of k.
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Answer 1

Answer:

k= -16

Step-by-step explanation:

just put x=4

16+k = 0

k= -16

Answer 2

Answer:

p(x) =

$p(x) = {x }^{2} + 2x + k = 0 \\ p(4) = {4 }^{2} + 2 \times 4 + k = 0 \\ = 16 + 8 + k = 0 \\ = k = - 24$

Hope it helps U....

#Monu(O_O)