Question

find the value of k if one of the zeroes of a quadratic polynomial x*2+3x+k
is 4
​

Answer 1

Answer:

Put x = 4 in the given polynomial

↪ (4)² + 3(4) + k = 0

16 + 12 + k = 0

28 + k = 0

k = 0 - 28

↪ k = - 28

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Answer 2

Answer:

k = -28

Step-by-step explanation:

If 1 root is given that means x=4 and by putting the value we will get 0.

x2 + 3x + k = 0

now x=4

4² + 3×4 + k = 0

16 + 12 + k = 0

k = -28

Hope this was helpful.