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Fluffy18
@Fluffy18
August 2022
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Решите квадратное уравнение: 36x²+20x-81=0
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nastya240500
D=b^2-4ac
D= 400+36*81*4=400+11664=12064
x1= (-20+корень из 12064)/72
х2=(-20+корень из 12064)/72
2 votes
Thanks 1
Fluffy18
А откуда 72?
Fluffy18
Ай. Всё. Поняла
kolibri082
Д= 400 + 36*4*81=11664=108(2)
х1=(-20+108)/36*2=11/9
х2=(-20-108)/36*2=-4/9
0 votes
Thanks 0
Fluffy18
400 не прибавили
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Answers & Comments
D= 400+36*81*4=400+11664=12064
x1= (-20+корень из 12064)/72
х2=(-20+корень из 12064)/72
х1=(-20+108)/36*2=11/9
х2=(-20-108)/36*2=-4/9