Question

one root of quadratic equation
2x²+kx-2=0 is-2 find k.

solve ​

Answer 1

Step-by-step explanation:

$2( - 2) + k( - 2) - 2 = 0$

$- 4 - 2k - 2 = 0$

$- 6 - 2k = 0$

$- 2k = 6$

$k = 6 \div - 2$

$k = - 3$

Answer 2

Answer:

view the answer in the picture

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