Bonjour,
Développer :
(7x+2x)×(-5) = 9x * (- 5) = - 45x
-4x(2x+3) = - 8x² - 12x
-1(-2+(-3x)) = - 1 (- 2 - 3x ) = 2 + 3x = 3x + 2
5x(x+(-5)) = 5x (x - 5) = 5x² - 25x
2x(3y+5x)-3 = 6xy + 10x² - 3
4x(3+2x)+4 = 12x + 8x² + 4 = 8x² + 12x + 4
2x(3+7x)+7 = 6x + 14x² + 7 = 14x² + 6x + 7
5(3x+4)-5+6+2x = 15x + 20 - 5 + 6 + 2x = 17x + 21.
Copyright © 2024 ELIBRARY.TIPS - All rights reserved.
Lista de comentários
Bonjour,
Développer :
(7x+2x)×(-5) = 9x * (- 5) = - 45x
-4x(2x+3) = - 8x² - 12x
-1(-2+(-3x)) = - 1 (- 2 - 3x ) = 2 + 3x = 3x + 2
5x(x+(-5)) = 5x (x - 5) = 5x² - 25x
2x(3y+5x)-3 = 6xy + 10x² - 3
4x(3+2x)+4 = 12x + 8x² + 4 = 8x² + 12x + 4
2x(3+7x)+7 = 6x + 14x² + 7 = 14x² + 6x + 7
5(3x+4)-5+6+2x = 15x + 20 - 5 + 6 + 2x = 17x + 21.