D= (x+1)²- (2x-1)(x+1) E=(2x-3)(4+x)-(x+2)(2x-3)
Mathématiques
lauraslc
Question
D= (x+1)²- (2x-1)(x+1)
E=(2x-3)(4+x)-(x+2)(2x-3)
E=(2x-3)(4+x)-(x+2)(2x-3)
1 Réponse
-
1. Réponse izzy
D= (x+1)^2-(2x+1)(x+1) "^" ça veut dire puissance
x^2+2x+1-[2x^2+2x+x+1]
x^2+2x+1-2x^2-2x-x-1
1x^2-x
E= (2x-3)(4+x)-(x+2)(2x-3)
8x+2x^2 -12-3x-[2x^2-3x+4x-6]
8x+2x^2-12-3x-2x^2+3x-4x+6
4x-6