1)16x^2-24x+2x-3-1=16x^2-16x+4
-24x+2x-3-1=-16x+4
-22x-4=-16x+4
-22x+16x=4+4
-6x=8
x=-4/3
x=-1(1/3)
3)x^2(4x-1)=0
x^2=0
4x-1=0
x=0
x=1/4
x=0
x=0,25
4)t^2-3t-4=0
t=4
t=-1
x^2-5=4
x^2-5=-1
x1=-3
x2=-2
x3=2
x4=3
5)x^2(x-4)=9(x-4)
x^2(x-4)-9(x-4)=0
(x-4)(x^2-9)=0
x-4=0
x^2-9=0
x1=-3
x2=3
x3=4