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Artem18Rus1
@Artem18Rus1
July 2022
2
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Найдите дискриминант по формуле D=b^2-4ac
1)12x+9x^2+4=0
2)12x-9x^2=0
3)x^2+11=0
4)5x^2-9x=0
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hraky
1) D=144-144=0
2) D=144-36*0=144
3) D=0-44=-44
0 votes
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hraky
4) D=81-20*0=81
МаргаритаКорж
12x+9x²+4=0
9x²+12x+4=0
D=12²-4*9*4=144-144=0
1 корень
х=-12+0/18=-12/18=-2/3
12х-9х²=0
-3х(3х-4)=0
3х-4=0
3х=4
х=4/3
х=1.1/3
0 votes
Thanks 0
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Answers & Comments
2) D=144-36*0=144
3) D=0-44=-44
9x²+12x+4=0
D=12²-4*9*4=144-144=0
1 корень
х=-12+0/18=-12/18=-2/3
12х-9х²=0
-3х(3х-4)=0
3х-4=0
3х=4
х=4/3
х=1.1/3