if √2 is the root of the equation kx²+√2x-4=0,find the value of k
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Given, x = √2
kx² + √2x - 4 = 0
k.(√2)² + √2.√2 - 4 = 0
2k + 2 - 4 = 0
2k - 2 = 0
2k = 2
k = 2/2
k = 1
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