(-3x+5) (2x+4)
-6x²-12x+10x+20=0
-6x²-2x+20=0
D=(-2)²-4*(-6)*20=484
x1=(2+Rac(484))/(2*-6)=-2
x2=(2-Rac(484))/(2*-6)=5/3
(3x+5) (2x-4)
6x²-12x+10x-20=0
6x²-2x-20=0
D=(-2)²-4*6*-20=484
x1=(2+Rac(484))/(2*6)=2
x2=(2-Rac(484))/(2*6)=-5/3
(3x-5) (2x-8)
6x²-24x-10x+40=0
6x²-34x+40=0
D=(-34)²-4*6*40=196
x1=(34+Rac(196))/(2*6)=4
x2=(34-Rac(196))/(2*6)=5/3