Bonjour,
-4x * 7y = -28xy
(5x)² = 25x²
-3 * m * m * 3 = -3m² * 3 = -9m²
6x + 12 - 2x - 4 - x = 3x + 8
3 * 4x² - 10x² + 5 * 2x = 12x² - 10x² + 10x = 2x² + 10x
-x * (-x) * (-x) = x² * (-x) = -x³
y - 3 - 4y + 7 + 6y = -3y + 4 + 6y = 3y + 4
3 * 2x - 7x - x * 4 = 6x - 7x - 4x = -5x
x * (-2x) + 4x * (-7x) = -2x² + (-28x²) = -2x² - 28x² = -30x²
y * y + y * y * y = y² + y³
-9x + 3x - 5x + 3 - 2x = -13x + 3
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Bonjour,
-4x * 7y = -28xy
(5x)² = 25x²
-3 * m * m * 3 = -3m² * 3 = -9m²
6x + 12 - 2x - 4 - x = 3x + 8
3 * 4x² - 10x² + 5 * 2x = 12x² - 10x² + 10x = 2x² + 10x
-x * (-x) * (-x) = x² * (-x) = -x³
y - 3 - 4y + 7 + 6y = -3y + 4 + 6y = 3y + 4
3 * 2x - 7x - x * 4 = 6x - 7x - 4x = -5x
x * (-2x) + 4x * (-7x) = -2x² + (-28x²) = -2x² - 28x² = -30x²
y * y + y * y * y = y² + y³
-9x + 3x - 5x + 3 - 2x = -13x + 3