what is the solution for 9x^2+3kx+k
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what is the solution for 9x^2+3kx+k
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9X^2-3kx+k
9X^2-3kx+k=0
Dividing each terms by 3,
3x^2-kx+k\3=0
b^2-4ac=(-k)^2-4×3×k\3
K^2-4k=0
k k^2=4k^2
k=4
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