x²+6x+ =(x+ )² x²-x+ =(x- )²

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x²+6x+ =(x+ )² x²-x+ =(x- )²
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x²+6x+ =(x+ )² x²-x+ =(x- )²
x²+6x+ =(x+ )² x²-x+ =(x- )²

x²+6x+ =(x+ )² x²-x+ =(x- )²
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