Г) 3х³-2x²-x=x(3x²-2x-1)=x(3x+1)(x-1)
3x²-2x-1=0
D=4+12=16
x1=(2-4)/6=-1/6=-1/3
x2=(2+4)/6=1
3x²-2x-1=(3x+1)(x-1)
д)
n²+2n-4=0
D=4+16=20
n1=(-2-√20)/2=-1-√5
n2=-1+√5
n²+2n-4=(n+1+√5)(n+1-√5)
д)
m²+2m+3=0
D=4+12
m1=(-2+4)/2=1
m2=(-2-4)/2=-6/2=-3
m²+2m+3=(m-1)(m+3)