Пошаговое объяснение:
1) |2x-4|=5
2x-4=5
2x=9
x=9/2=4.5
2x-4=-5
2x=-1
x=-1/2
2) (-4x-3)(3x-0.6)=-12x²+2.4x-9x+1.8=0
-12x-6.6+1.8=0
D=43.56-4*(-12)*1.8=129.96
x1=(6.6+11.4)/(-24)=-0.75
x2=(6.6-11.4)/(-24)=0.2
-4х-3=0
-4х=3
х1=-0.75
3х-0.6=0
3х=0.6
х2=0.2
Пошаговое объяснение:
1) |2x-4|=5
2x-4=5
2x=9
x=9/2=4.5
2x-4=-5
2x=-1
x=-1/2
2) (-4x-3)(3x-0.6)=-12x²+2.4x-9x+1.8=0
-12x-6.6+1.8=0
D=43.56-4*(-12)*1.8=129.96
x1=(6.6+11.4)/(-24)=-0.75
x2=(6.6-11.4)/(-24)=0.2
-4х-3=0
-4х=3
х1=-0.75
3х-0.6=0
3х=0.6
х2=0.2