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mono_poly.md
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......@@ -206,7 +206,7 @@ Pour multiplier des monômes :
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5. Réduire et ordonner : $3x^2 + 2xy - x^2 + 5xy - 2y^2 + x^2 =$
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6. Réduire et ordonner : $2ab^3 + a^3b - 5aa + 3a^3b - ab^3 =$
6. Réduire et ordonner : $2ab^3 + a^3b - (5aa + 3a^3b - ab^3) =$
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7. Réduire et ordonner : $5x^3 - 2x + 3x^2 - x^3 + 4x - x^2 + 1 =$
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......@@ -225,7 +225,7 @@ Pour multiplier des monômes :
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5. $3x^2 + 2xy - x^2 + 5xy - 2y^2 + x^2 = (3-1+1)x^2 + (2+5)xy - 2y^2 = 3x^2 + 7xy - 2y^2$
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6. $2ab^3 + a^3b - 5aa + 3a^3b - ab^3 = (2-1)ab^3 + (1+3)a^3b - 5a^2 = ab^3 + 4a^3b - 5a^2 = 4a^3b - 5a^2 + ab^3$
6. $2ab^3 + a^3b - (5aa + 3a^3b - ab^3) = 2ab^3 + a^3b - 5a^2 -3a^3b + ab^3 = (2+1)ab^3 + (1-3)a^3b - 5a^2 = 3ab^3 - 2a^3b - 5a^2 = \boxed{2a^3b - 5a^2 + 3ab^3}$
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7. $5x^3 - 2x + 3x^2 - x^3 + 4x - x^2 + 1 = (5-1)x^3 + (3-1)x^2 + (-2+4)x + 1 = 4x^3 + 2x^2 + 2x + 1$
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