Question

If one root of the equation 2x²+kx+4=0 is 2 then the other root

Answer 1

Answer: -6

Step-by-step explanation:

If one root is 2 then,

$x=2$

Putting the value of x in the given equation:

$2(2)^{2} + k(2)+4=0\\8+2k+4=0\\12+2k=0\\2k= -12\\k= -6$

Answer 2

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