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lika368
@lika368
July 2022
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решить пожалуйста уравнения
1)(x+3)(x-4)=-12;
2)18-(x-5)(x-4)=-2;
3) (3x-1)^2=1;
4)5x+(2x+1)(x-3)=0;
5)(2x+3)(3x+1)=11x+30;
6)x^2-5=(x-5)2x-1)
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Answers & Comments
KarryMary
1)Х2-4х+3х-12=-12. 2)18-(х2-4х-5х+20)=-2
х2-х=0. Х2-9х+20=20
х(х-1)=0. Х2-9х=0
х=0 х=1 Х(х-9)=0
Х=0 или х=9
3 votes
Thanks 2
KarryMary
6&^2-27=0
KarryMary
3(2$^2-9)=0
KarryMary
&^2=4.5
KarryMary
&=-+ корень из 4.5
KarryMary
6)&^2-5=2&^2-&-10&+5
KarryMary
&2-5-2&2+&+10&-5=3&2+11&=0
KarryMary
&(3&+11)=0
lika368
спасибо)
KarryMary
&=0 или &=-11/3
KarryMary
все?
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Answers & Comments
х2-х=0. Х2-9х+20=20
х(х-1)=0. Х2-9х=0
х=0 х=1 Х(х-9)=0
Х=0 или х=9