Question

1)(t2 8t)2 19(t2 8t) 84=0

2)(t2-9t)2 22(t2-9t) 112=0

3)(2z2 11z)2-23(2z2 11z) 126=0

4)(2x2 3)2-12(2x2 3) 11=0

5)(x 1)2(2 2x)=12

6)(x2 3x 1)(x2 3x 3)=-1

7)(x2-4x 1)(x2-4x 2)=12

Comments

798 сынып зив  кітабын интернеттен калай таба алам

Answer 1

1)Берілгені:
t^2+8t=z
Z^2+19z+84=0
D=361-4*1*84=25
z1/2=-19+-5/2
z1=-7                                                                                                        z2=-12
t^2+8t=-7                                                                                              t^2+8t=-12
t^2+8t+7=0                                                                                           t^2+8t+12=0
n=4                                                                                                           n=4
D=16-1*7=9                                                                                           D=16-1*12=4
t1/2=-4+-3/1                                                                                       t3/4=-4+-2/1
t1=-1       t2=-7                                                                                            t3=-2           t4=-6
Жауабы:-1;-7;-2;-6

Answer 2

Биквадрат тендеу
6) (x2 plus 3x plus 1) (x2 plus 3x plus 3)=-1
7) (x2 - 4x plus 1) (x2 - 4x plus 2)=12
есептер 6шы. Жане 7 шы осылар шыгар берылгены.осыларды маган шыгарып берыныздершы?

Answer 3

2)Берілгені:
1)Берілгені:
t^2-9t=u
u^2+22z+112=0
n=11
D=121-112=9
u1/2=-11+-3
u1=-8                    u2=-14
t^2-9t=-8            t^2-9t=-14
t^2-9t+8=0        t^2-9t+14=0
D=81-4*1*8=49         D=81-4*1*14=25
t1/2=9+-7/2           t3/4=9+-5/2
t1=8          t2=1            t3=7       t4=2
;Жауабы:8;1;7;2;

Answer 4

3)берилгени: '-квадрат; /^-тубир асты
(2z'+11z)'-23(2z'+11z)+126=0
x'-23x+126=0
D=(-23)'-4×2×126=529-504=25=/^5
x1=23-5/2=18/2=9
x2=23+5/=28/2=14
x'+11=9
x'+11+9=0
D=11'-4×1×(-9)=121+172=193
2z'+11z=14
2z'+11z-4=0
D=11'-4×2×(-4)=121+118=/^233
z1=-11+/^193/4
z2=-11+/^233/4
Ж:z1;z2

Answer 5

8сынып есеби тендеуди шешу(2х+3)(3х+1)-11х+30

Answer 6

отинем 8 сынып алгебра мектеп баспа 169 есеп шыгарып бериниздершы 169дын 5,6,7 варианттарын гана