Question

find the value of k for which x=-2 is a root of equation x/2+x-2= kx-1​

Answer 1

Answer:

if x is the root of the eqn

then substituting x=2 in the eqn

2/2+2-2=2k-1

1+0=2k-1

1+1=2k   {transposing}

2=2k

k=2/2

k=2

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Answer 2

Answer:

k=2

Step-by-step explanation:

The root of Given equation is X=-2

•°• X/2+X-2=Kx-1

•°• -2/2+(-2)-2=k(-2)-1

•°• -2/2-2-2=-2k-1

•°• -2/2-8=-2k

•°• -2-8/2=-2k-1

•°•-10/2=-2k-1

•°• -5 = -2k - 1

•°• -5+1 = -2k

•°• -4 = -2k

•°• -4/-2=k

•°• k = 2