Tareas

58.
22x+1 - 6x-1 = 5
2x-2-12x-62x+1(x-1) = -10X-8=52X+1(X-1)
-10X-8=10X+5(X-1)
-10X2+10X-5X-10X-8+5=010X2+5X+3=0
X=-5±52-410(3)20 = -5±25-12020 =-5±-9520

60.
6(W+1)2-W+ WW-1=3
6W+6W-1+W(2-W)2-W(W-1)=3 6W2-6+2W-W2 = 3(2-W) (W-1)5W2+2W-6=6-3W(W-1)
5W2+2W-6=6W-6-3W2+3W
8W2-7W=0
W8W-7=0
W=0
8W-7=0
8W=7
W = 78
72.
X- 2X-8-2=0
(X-2X-8)2=(2)2
(2 )2-2X2X-8+(2X-8)2=4
X-2 X 2X-8+2X-8-4
-2X 2X-8=4-3X+8
-2X 2X-8= -3X+12
2X 2X-3=3X-12
(X 2X-8 )2=(3X-122)2
2X2-8X= 9X2 -72X+14448X2-32X=9X2-72X+144
-X2+40X-144=0
x2-40x-144=0
x=40±(40)2-4(144)2
x=40±10242
x=40- 32+ 2
x1=40+32 2= 722=36
x2= 40-322= 8 2=4
74.y-2+2= 2y+3
(y-2- 2y-3)2=(-2)2
y-2-2y-2 2y-3+ 2x+3=4
-2y-22x+3=4-3y-1
-2y-22y+3=-3y+3
(y-22y-3)2=(3y-32)2
y-22y+3=9y2-18y+94
4y-22y-3=9y2-18y+9
8y2+12x-16x-24-9y2+18y-9=0-y2+14y-33=0
y2-14y+33=0
x=14±(-14)2-4(33)2
x=14- 64+2
X= 14- 8+2
x1=11
x2=3
76.
t+2=3t+1
t+22=3t+12
t+2=3t-1
t2=3t-32
t=9t2-18t+9
9t2-19t+9=0
x=19±-192-49929x=19±3718
7.
X+53-12≤2 2X+5-36≤12 2X+10-3≤12 2X-5≤0
2X≤5 X≤52 (-∞;52
9 .
14s-3≤3+2s8 15-124≤3+2s8 2s-24≤3+2s2s-2s≤3+24
0≤27 -∞<x <∞ (-∞;∞

11.
3-2X=7 -2X=-3±7 -2X=-42 X=-2
3-2X=7 -2X=-3-7 X=+102 X=5

13.2Z-3<-5 2Z<5+3 Z<82 Z=4
-5<2Z-3<5 - 2<2Z≤8 22 <Z<82 (-1 , 4)

15.
3-2X≥-4 3-2X≥-4 X≥72 72;∞...