x² + Kx + k = 0 find the value of k ?
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Explanation:
x² +kx+k=0 has only one solution.
∴ The discriminant b² −4ac=0
∴k² −4k=0
⇒k(k−4)=0
∴k=0 or k=4
So for k=0 or k=4 the equation x²+4x+4=0 has only one solution.
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