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alishaagra99
@alishaagra99
July 2021
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For what value of k -2 is a zero of the polynomial 3x^2+4x+2k
Answers & Comments
abhi178
Verified answer
-2 is zero of 3x² +4x +2k polynomial
hence, put x = -2 in polynomial and equate to zero
e.g
3(-2)² + 4(-2) + 2k = 0
3 × 4 -4 × 2 + 2k = 0
12 - 8 + 2k = 0
4 + 2k = 0
K = -2
hence, value of K = -2
46 votes
Thanks 56
deepikakvvk06
Verified answer
Hello there !
-2 is zero of the quadratic polynomial 3x² +4x +2k
Put the value "-2" in the equation.
3(-2)² + 4(-2) + 2k = 0
3 × 4 + 4 × -2 + 2k = 0
12 + [-8] + 2k = 0
4 + 2k = 0
2k = -4
k = -4/2
k = -2
Hence ,
the the value of k in the quadratic polynomial 3x² +4x +2k is -2
Hope this Helps You !!!
26 votes
Thanks 42
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Answers & Comments
Verified answer
-2 is zero of 3x² +4x +2k polynomialhence, put x = -2 in polynomial and equate to zero
e.g
3(-2)² + 4(-2) + 2k = 0
3 × 4 -4 × 2 + 2k = 0
12 - 8 + 2k = 0
4 + 2k = 0
K = -2
hence, value of K = -2
Verified answer
Hello there !-2 is zero of the quadratic polynomial 3x² +4x +2k
Put the value "-2" in the equation.
3(-2)² + 4(-2) + 2k = 0
3 × 4 + 4 × -2 + 2k = 0
12 + [-8] + 2k = 0
4 + 2k = 0
2k = -4
k = -4/2
k = -2
Hence ,
the the value of k in the quadratic polynomial 3x² +4x +2k is -2
Hope this Helps You !!!