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Answered


9 Réduire.
A = 6x² + 9x + 3x² - 6 - 2x
B = 11x + 7x - 6x2 - 2x - 4x2
C = 8x + 5 - 2x2 - 7x - 15 + 8x2
D = 6x2 + 3x + 12x - 9 - 10x2 + x - 4

Sagot :


A = 6x² + 9x + 3x² - 6 - 2x
⇔ A = 9x² + 7x - 6
B = 11x + 7x - 6x² - 2x - 4x²
⇔ B = - 10x² + 16x
C = 8x + 5 - 2x² - 7x - 15 + 8x²
⇔ C = 6x² + x - 10
D = 6x²+ 3x + 12x - 9 - 10x² + x - 4​
⇔ D = - 4x² + 16x - 13

Voila jsp si sa ta aider

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