Bonjour,dévelloper et réduire les expression.Merci d'avance
A=(x-1) (2-y)(2-y) B=(x-2) (1+x) C= (x-7) (2-x)
D= 3(x-1)+2(2-x) E=2-7(2-x) F= -(2-a)-(-5a+4)
A=(x-1) (2-y)(2-y) B=(x-2) (1+x) C= (x-7) (2-x)
D= 3(x-1)+2(2-x) E=2-7(2-x) F= -(2-a)-(-5a+4)
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Bonjour
A=(x-1) (2-y)= 2x-xy-2+y
B=(x-2) (1+x) = x + x^2-2-2x
= x^2 -x-2
C= (x-7) (2-x) = 2x-x^2 -14 +7x = -x^2 +9x -14
D= 3(x-1)+2(2-x) = 3x-3+4-2x = x +1
E=2-7(2-x) = 2-14 + 7x = 7x-12ème
F= -(2-a)-(-5a+4) = -2+a +5a-4 = 6a-6