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potencije s racionalnim eksponentom

Authored by Aleksandra Pletikosic

Mathematics

11th Grade

Used 2+ times

potencije s racionalnim eksponentom
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6 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Broj   0.06250.750.0625^{-0.75}  iznosi:

- 8

8

 18\frac{1}{8}  

2

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Zaokružite istinitu jednakost.

54+(5)4=05^4+\left(-5\right)^4=0

21.2 × 0.41.2 = 12^{1.2}\ \times\ 0.4^{1.2}\ =\ 1

8238238^{-\frac{2}{3}}\ne-8^{\frac{2}{3}}

20.5 ×(0.5)2 = 242^{-0.5}\ \times\left(-0.5\right)^{2\ }=\ \frac{\sqrt{2}}{4}

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Broj x jednak je

9

1/9

-1/9

-9

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Zapis korijena  pomoću jedne potencije jednak je:

a13a^{\frac{1}{3}}

a23a^{\frac{2}{3}}

a29a^{\frac{2}{9}}

a49a^{\frac{4}{9}}

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Zapis izraza u obliku potencije s racionalnim eksponentom je:

a12b12a^{\frac{1}{2}}-b^{\frac{1}{2}}

(ab)12\left(a-b\right)^{\frac{1}{2}}

(ab)12(a+b)12\left(a-b\right)^{\frac{1}{2}}\left(a+b\right)^{\frac{1}{2}}

(ab)14(a+b)14\left(a-b\right)^{\frac{1}{4}}\left(a+b\right)^{\frac{1}{4}}

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

 x22x1 = 0x^2-2x-1\ =\ 0  


Kojem najmanjem skupu brojeva pripadaju rješenja zadane jednadžbe?

racionalnih

iracionalnih

cijelih

prirodnih

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