factorise les expréssion suivantes: ax+ay x-ax+xy a2b+ab2-2ab 5x2-10x 16-x2

Factoriser les expressions suivantes : 

[tex]ax+ay \\ =a\times x+a\times y \\ =a(x+y) \\ \\ a^2b+ab^2-2ab \\ =ab\times a+ab\times b-ab\times2 \\ =ab(a+b-2) \\ \\ 5x^2-10x \\ =5x\times x-5x\times2 \\ =5x(x-2) \\ \\ 16-x^2 \\ =4^2-x^2 \\ =(4-x)(4+x)[/tex]

Bonsoir

Factorisons

ax+ay = a(x+y)

x-ax+xy = x(1-a+y)

a2b+ab2-2ab = ab(a+b-2)

5x2-10x = 5x (x-2)

16-x2 = (4+x)(4-x)