Question

If one zero of quadratic polynomial 3x2+kx-2 is 2, Find the value of k.​

Answer 1

Answer:

k = 5

This is the right answer

Answer 2

Step-by-step explanation:

if one zero is 2

=> x = 2

given polynomial ;

p(x) = 3x² + kx - 2

=> p(2) = 3(2)² + k(2) - 2

=> 0 = 3 × 4 + 2k - 2

=> 0 = 12 + 2k - 2

=> 0 = 10 + 2k

=> 2k = -10

=> k = -10/2

=> k = -5

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