what is the value of k,if (-2)is a zero of the polynomial x²+5x+k
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Answered by
8
Given :
• -2 is the zero of the polynomial x² + 5x + k
To find :
• the value of k .
Solution:
=> x² + 5x + k = 0
put x = -2
=>( -2)² + 5 (-2)+ k =0
=> 4 -10+k = 0
=> k = 6 .
Answered by
0
Explanation:
Given: -2 is zero of polynomial x²+5x+k
To Find: value of k
Solution:
x²+5x+k = 0
[Put x = -2]
=> (-2)² + 5(-2) + k = 0
=> 4 - 10 + k = 0
=> 4 - 10 = -k
=> -6 = -k
=> k = 6
.°. k = 6
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