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УРАВНЕНИЯ

Authored by Rumiana Naidenova

Mathematics

1st - 12th Grade

Used 9+ times

УРАВНЕНИЯ
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11 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Равенството 3а + 5 + ? = 5 , ако:

? = 3а

? = 8а

? = –3а

? = – 8а

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Числото (–2) е корен на уравнението:

х2 = 14х^2\ =\ \frac{1}{4}  

х−х2 = 1х-\frac{х}{2}\ =\ 1  

∣7−х∣ =9\left|7-х\right|\ =9  

2(х+7) −7 =−42\left(х+7\right)\ -7\ =-4  

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Кое уравнение има отрицателен корен?

−10х=−5-10х=-5  

–12(–х) = 7

15–х = –7

х + 8 = 3

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Коренът на уравнението 25−у =3025-у\ =30  е :

– 55

–5

55

5

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Намерете корена на уравнението 8х−11+х=−478х-11+х=-47  

4

–4

– 4 и 4

–6 , 5

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

– 5х – 9 = –21 , ако х =?

2 , 4

–6

−2 25-2\ \frac{2}{5}  

6

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Ако −36 . 27=311 . х-3^6\ .\ 27=3^{11}\ .\ х  , то х = ?

–9

−19-\frac{1}{9}  

19\frac{1}{9}  

9

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