Réponse:
Bonjour,
3 × 2x²- 7 (-4x) + 4(-2x²) + 5 × 2x
6x²- 7(-4x) + 4(-2)x²+ 5 × 2x
6x² - (-28x) + 4(-2)x² + 5 × 2x
6x² + 28x + 4(-2)x² + 5 × 2x
6x² + 28x -8x²+ 5 × 2x
-2x² + 30x + 5
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Réponse:
Bonjour,
3 × 2x²- 7 (-4x) + 4(-2x²) + 5 × 2x
6x²- 7(-4x) + 4(-2)x²+ 5 × 2x
6x² - (-28x) + 4(-2)x² + 5 × 2x
6x² + 28x + 4(-2)x² + 5 × 2x
6x² + 28x -8x²+ 5 × 2x
-2x² + 30x + 5