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If the equation $k x^{2} - 4 x + 1 = 0$ is quadratic, which value of $k$ is NOT allowed?

Class 10Standard Form and RootsQuadratic Equations

A-1
B2
C1
D0

Step-by-Step Solution

For the equation to be quadratic, the coefficient of

x^{2}

must be non-zero, so k cannot be 0.

Answer: D) 0

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