1-2
2-3
3-2
4-2
5-3
6-3
7-2
8-4
9-2
10-3
11-
12-4
13-2
14-1
15-2
16-3
17-4
18-
19-
20-
21-70կմ/ժ
22-60կմ/ժ
23-9
24-27
25-
26-
27-
28-
29-
30-
31-
32-
1-2
2-3
3-2
4-2
5-3
6-3
7-2
8-4
9-2
10-3
11-
12-4
13-2
14-1
15-2
16-3
17-4
18-
19-
20-
21-70կմ/ժ
22-60կմ/ժ
23-9
24-27
25-
26-
27-
28-
29-
30-
31-
32-
659
ա․
664
665
652
x*(10*x)=21
10x-x2=21
10x-x2-21=0
-x2+10x-21=0
x2-10+21=0
D=100-84=16
x1=10+√16/2=7
x2=10-√16/2=3
x1+x2=10
x1*x2=21
x2-10x+21=0
653
x*(14-x)=36,75
14x-x2=36,75
14x-x2-36,75=0
-x2+14x-36,75=0
x2-14x+36,75=0
D=196-147=49
x1=14+√49/2=10,5
x2=10-√49/2=1,5
x1+x2=10,5
x1*x2=1,5
x2-10,5x+1,5=0
644
ա․
2x2−3x+1=0
2/2=1
-3:2=-1,5
1:2=0,5
x2-1,5x+0,5=0
D=2,25-2=0,25
x1+x2=1,5
x1*x2=0,5
բ․
3x2+x+4=0
3:3=1
x2+1/3+4/3=0
D=1/9-16/12=Լուծում չունի
գ․
դ․
ե․
զ․
647
ա․
x1=1
x2=5
x1+x2=6
x1*x2=5
x2-6x+5=0
x1=1
x2=5
(x-1)(x-5)=0
x2-5x-x+5=0
x2-6x+5=0
բ․
x1=-2
x2=3
x1+x2=1
x1*x2=-6
x2-x-6=0
x1=-2
x2=3
(x+2)(x-3)=0
x2-3x+2x-5=0
x2-x-5=0
գ․
x1=4
x2=6
x1+x2=10
x1*x2=24
x2-10x+24=0
դ․
x1=-3
x2=-6
x1+x2=-9
x1*x2=18
x2+9x+18=0
ե․
x1=0,5
x2=4
x1+x2=4,5
x1*x2=2
x2-4,5x+2=0
զ․
x1=1,2
x2=-5
x1+x2=-3,8
x1*x2=-6
x2+3,8x-6=0
է․
x1=1
x2=-1
x1+x2=0
x1*x2=-1
x2-1=0
ը․
x1=5
x2=5
x1+x2=10
x1*x2=25
x2-10x+25=0