To simplify the expression \( 6k - 1 - 2 - 9k^2 \), we can combine like terms.
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Combine the constant terms: \[ -1 - 2 = -3 \]
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Now, we rewrite the expression including the combined constants: \[ -9k^2 + 6k - 3 \]
The final simplified expression is: \[ -9k^2 + 6k - 3 \]