1.Factorise les expressions suivantes 1)4x² - 25 =
2)3a² - 6a +3=
3)(x + y).(2x - y) - (2x - 3y).(2x - y)=
4)ax - ay + 3x - 3y =
5)a⁸-1=
6)x⁵ -x⁴ -2x +2=
7)2a - 3ab - 3b + 2a²=
8) 4x² + 12x +9 - y²=
9)x³ + 3x² + x + 3=
10) 3x³ - x² - 75x +25=
11)2a.(a-3b) - 5. (3b-a)²=

peut-on m'aider à résoudre ces équations svp​
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