if 1/2 is a root of the equation 2x²-kx+3=0,then find the value of k
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Answered by
2
Step-by-step explanation:
2x²-kx+3= 0
= 2×(1/2)²-k(1/2)+3= 0
= 2× 1/4 - k/2 +3= 0
= 1/2-k/2+3= 0
= 1-k+6=0
= -k+7=0
= -k= -7
k= 7
Answered by
6
is one of the root of
value of k
It’s given that is one of the root of
Means
As is root of equation which means that ii will give 0
Now as we know x value so let’s put in equation
[← now 2 will cut 4 gives ]
[ ← bringing 2 to RHS get multiplied to 0 gives 0]
Hence k = -7
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