Sagot :
Bonjour,
[tex]4x - 14 = 2\times 2x - 2\times 7 = 2(2x - 7)\\\\15 - 3x = 3\times 5 - 3x = 3(5 - x)\\\\9x + 21 = 3\times 3x + 7 \times 3= 3(3x + 7)\\\\x^2 - 2x = x\times x - 2x = x(x - 2)\\\\6x + 3x^2 = 2 \times 3x + x \times 3x = 3x(2 + x)\\\\x^2 - x = x(x - 1)[/tex]
Bonjour
Factoriser les expressions suivantes :
1°. 4x-14= 2 * 2x - 2 * 7 = 2(2x - 7)
2°. 15-3x= 3 * 5 - 3 * x = 3(5 - x)
3°. 9x+21= 3 * 3x + 3 * 7 = 3(3x + 7)
4°. x^2-2x= x * x - 2 * x = x(x - 2)
5°. 6x+3x^2= 3x * 2 + 3x * x = 3x(2 + x)
6°. x^2-x= x * x - x * 1 = x(x - 1)