\( x \in R \), then the expression \( 9^{x}-3^{x}+1 \) assumes (A) all real values (B) all real ...

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\( x \in R \), then the expression \( 9^{x}-3^{x}+1 \) assumes
(A) all real values
(B) all real values greater than 0
(C) all real values greater than \( 3 / 4 \)
(D) all real values greater than \( 1 / 4 \)
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