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The interval in which the function f(x)=...

The interval in which the function `f(x)=10-6x+2x^(2)` strictly increasing is
(A) `(-oo,(3)/(2))`
(B) `((3)/(2),oo)`
(C) `(-oo,(2)/(3))`
(D) `((2)/(3),oo)`

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