No berapa aja Yang kalian tau☺ tolong Bantu ya please

1) x²-7x+6=0
(x-6)(x-1)=0
x=6 x=1

2) x²-2x+1=0
(x-1)(x-1)=0
x=1

3) x²-4=0
(x+2)(x-2)
x=-2 x=2

4) x²+3x-4=0
(x+4)(x-1)=0
x=-4 x=1

11. (2x+1)(x+3)
12.(2x+1)(x+2)
13.(x+1 )(2x+3)
14.(x-2)(3x+4)
15.(3x-4)(3x-4)