, .
( ).
, . . , n
n, (n n=b. n +.
I. , .
:
1) ;
2) ;
3) . . , , .
4) ;
5) ; ()
6) .
1. =2-1
.
. :
()2=(2-1)2
2+5+1= 42-4+1
32-9=0
2-3=0
(-3)=0
1=0; 2=3
:
1=0: =1; 20-1=-1; 1≠-1 =>1=0 ( ).
2=3: =5; 23-1=5; 5=5.
: =3.
2.
.
2 )2
2-3=-2
2-=3-2
=1
:
=1: => =1- . .
: .
3. -=4-4
.
=+3-4
=4 -4
2=(4-4)2
10++2=162-32+16
152-33+6=0
, .
D=
D=332- 4156=1089-360=729
12
12 1=2; 2=0,2
:
1=2: -2 = - 2= 4- 2=2; 32-4=2; 2=2
2=0,2: = -0,2=3,2-0,2=3; 30,2-4=0,6-4= -3,4;
3≠-3,4 => [1]2=-3,4- .
: =2.
4.
.
:
()2=(+3)2
()2 =(+3)2
(+6)(13-3) = (+3)2
13-32+78-18=2+6+9
42+11-69=0
1=3; 2=
:
1=3: =32=6 3+3=6; 6=6.
2= = -
2= -
: =3.
5. - =2
.
. .
( - )2 =22
4+8-2 +3-2=4
7=2=2
:
(7+2)2=(2 )2
492+28+4=4(4+8)(3-2)
492+28+4=4(122-8+24-16)
2-36+68=0
1=34; 2=2
:
1=34: - =
2=2: - = .
: =34; 2=2.
6. = .
.
()3 =()3
2+7=3-3
2-3=-3-7
|
|
-=-10
=10
, , , .
: =10.
7. 4 =
.
(4 )4 = ()4
252-144=4
4-252+144=0 - .
2=, 2-25+144=0
1=16; 2=9. : 2=16 => 1,2=4
2=9=> 3,4=3
: 1=4: 4 = =4; 4=4.
2=-4: 4 = =4; 4≠-4=> 2=-4 - .
3=3: 4 = =3; 3=3.
4=-3 4 = =3; 3≠-3- .
: 1=4;2=3.
8. + =12.
.
= , = ()2=2.
2+-12=0; 1=3; 2=-4
1) =3
2+1=34
2+1=81
2=80
=40.
2) =-4. ,
≥0, (-4)˂0.
: =40: + = + =9+3=12; 12=12.
: =40
9.
.
: ≠13.
= ,
≠0.
=
32-10+3=0; 1=3; 2= . :
1) 3;
+ 13=27(-13);
+13=27-351
26 = 364
1=14;
2)
27(+13)=-13
27+351=-13
26=-364
2=-14.
: 1=14; 2=14.
:
1. =--1;
2. - =0;
3. -=1;
4. - =+1;
5. -4=;
6. + =3;
7. + =
8. 2=
9. + =20;
10. 2 =5 -18=0;
11. +2 =3;
12. =4;
13. - =2- ;
14. =12-
15. - 2 = .
:
1.=-6; 2.=1;
3. 1=2, 2=0; 4. =1;
5. 1=-1, 2= ; 6.=1;
7. =-1; 8.1,2= , 3,4= ;
9. =256; 10. =-63;
11. ; 12. =-1;
13. =7; 14. =68;
15. =1