Bonjour
11x-22=11x-2*11=11(x-2)
x*x-3x=x(x-3)
x²+9x=x*x+9*x=x(x+9)
3x²+9x=3x*x+3*x*3=3x(x+3)
2.5x+2.5=2.5(x+1)
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Bonjour
11x-22=11x-2*11=11(x-2)
x*x-3x=x(x-3)
x²+9x=x*x+9*x=x(x+9)
3x²+9x=3x*x+3*x*3=3x(x+3)
2.5x+2.5=2.5(x+1)