\( 2 x^{2}+x+3+5 x^{2}+2 x+7 \)
Answer
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Answer
\( 7x^2 + 3x + 10 \)
Steps
Step 1 ：\( (2x^2 + 5x^2) + (x + 2x) + (3 + 7) \)
Step 2 ：\( 7x^2 + 3x + 10 \)
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