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1.x² -25=(x+5)(x-5)
2. x²-20x+100= (x-10)(x-10)
3. x²+4x+3= (x+1)(x+3)
4. 4x²-12x+5=(2x-1)(2x-5)
5. 3ax²-6ax= 3ax(x-2)
6.x(x+2)-x=x(x+1)
7.x²-4x-ax+4a=(x-a)(x-4)
8.25x²-49=(5x-7)(5x+7)
9.36x²-60x+25=(6x-5)(6x-5)
10.4x²+12x+9= (2x+3)(2x+3)
2. x²-20x+100= (x-10)(x-10)
3. x²+4x+3= (x+1)(x+3)
4. 4x²-12x+5=(2x-1)(2x-5)
5. 3ax²-6ax= 3ax(x-2)
6.x(x+2)-x=x(x+1)
7.x²-4x-ax+4a=(x-a)(x-4)
8.25x²-49=(5x-7)(5x+7)
9.36x²-60x+25=(6x-5)(6x-5)
10.4x²+12x+9= (2x+3)(2x+3)
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