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Answer :

Solution

Step 1

Write the difference

[tex](2x^2+7x+6)\text{ - \lparen3x}^2-x\text{\rparen}[/tex]

Step 2

[tex]\begin{gathered} 2x^2+7x+6-3x^2+x \\ Add\text{ similar terms} \\ \\ -x^2+\text{ 8x + 6} \end{gathered}[/tex]

Final answer

[tex]A.\text{ -x}^2+8x+6[/tex]

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