1) D=196-180= 16
x1= (14+4)/10= 1,8
x2= (14-4)/10= 1
2) 4x²-4x+1=0
(2x-1)²=0
x=0,5
3) D=256-72= 184
x1= (-16+√184)/12= (-8+√46)/6
x2= (-16-√184)/12= (-8-√46)/6
1) D=196-180= 16
x1= (14+4)/10= 1,8
x2= (14-4)/10= 1
2) 4x²-4x+1=0
(2x-1)²=0
x=0,5
3) D=256-72= 184
x1= (-16+√184)/12= (-8+√46)/6
x2= (-16-√184)/12= (-8-√46)/6