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Simplifica las siguientes $e\times prosione5$ $15.\left(a-4\right)+\left(a+5\right)-\left(a+7\right)=$ – - $16.\left(5x^{2}-3x+2\right)+\left(2x^{2}+8x-3\right)-\left(6x^{2}-10x+1\right)=$ $17.\left(2a^{2}-3a\right)-\left(7a^{2}+5a\right)+\left(6a^{2+7a}\right)=$ - - $18.\left(5x^{2}+3x-4\right)-\left(2x^{2}+5\right)-\left(3x+7\right)=$ – – – $19.\left(-8a^{2-4}\right)-\left(3a+5\right)-\left(3a^{2}+a\right)=$ - - $20.\left(2a^{3}+4a^{2}-4\right)+\left(a^{3}+5\right)-\left(5a^{2}-1\right)=$ - - $21.\left(-ab^{4}-7b^{3}+ab^{2}\right)+\left(-2ab^{4+5b-2}\right)-\left(6b^{3}+ab^{2}\right)$ – = - - $22$ $\left(-4+xy^{2}+2xy^{3}\right)-\left(-6-y+3y^{2}\right)-\left(-xy^{2}-5xy^{2}\right)=$
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Solución
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Profesor de Qanda - renzo
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