Free Printable Test radicali

1.

$17^2$ este egal cu

a)

$289$

b)

$169$

c)

$34$

2.

Media geometrică a numerelor 8 și 2 este:

a)

$5$

b)

$4$

c)

$16$

3.

$\sqrt{8}\cdot\sqrt{2}$ =

a)

$2\sqrt{2}$

b)

$4$

c)

$4\sqrt{2}$

4.

$2\sqrt{5}\cdot4\sqrt{2}=$

a)

$80$

b)

$40\sqrt{2}$

c)

$8\sqrt{10}$

d)

$16\sqrt{5}$

5.

$\sqrt{50}:\sqrt{2}=$

a)

$5\sqrt{2}$

b)

$5$

c)

$2\sqrt{5}$

d)

$10$

6.

Introducând factori sub radical $5\sqrt{3}$ se obtine:

a)

$\sqrt{30}$

b)

$\sqrt{15}$

c)

$\sqrt{75}$

d)

$\sqrt{45}$

7.

Scoțând factori de sub radical $\sqrt{540}$ se obține:

a)

$36\sqrt{5}$

b)

$12\sqrt{15}$

c)

$6\sqrt{15}$

d)

$36\sqrt{3}$

8.

$\sqrt{25^2-24^2\ }=$

a)

1

b)

$7$

c)

$\sqrt{7}$

d)

$2\sqrt{7}$

9.

$3\sqrt{16}-5\sqrt{9}+7\sqrt{25\ }=$

a)

$-28$

b)

$38$

c)

$32$

d)

$25\sqrt{2}$

10.

$\left(-0,4\left(6\right)\sqrt{75}\right):\frac{7}{15}\sqrt{3}=$

a)

$15$

b)

$-15$

c)

$-5$

d)

$-150$

11.

Raționalizând $\frac{3}{\sqrt{12}}$ se obține:

a)

$\frac{\sqrt{3}}{6}$

b)

$\frac{2\sqrt{3}}{3}$

c)

$\frac{\sqrt{3}}{2}$

d)

$\frac{\sqrt{3}}{6}$

12.

$\left(\frac{2}{3}\right)^{-2}=$

a)

$\frac{4}{9}$

b)

$\frac{9}{4}$

c)

$\frac{2}{3}$

d)

$\frac{3}{2}$

13.

$\sqrt{\frac{3^2+4^2}{25^2-15^2}}=$

a)

$\sqrt{\frac{5}{20}}$

b)

$\frac{1}{2}$

c)

$\frac{1}{4}$

d)

$\frac{5}{10}$

14.

$\sqrt{0,09}=$

a)

$\frac{3}{10}$

b)

$\frac{9}{100}$

c)

$\frac{9}{10}$

d)

$\sqrt{\frac{3}{10}}$

15.

Explicitarea modulului

\left|7\sqrt{3}-6\sqrt{4}\right|

este:

a)

$7\sqrt{3}+6\sqrt{4}$

b)

$6\sqrt{4}-7\sqrt{3}$

c)

$7\sqrt{3}-6\sqrt{4}$

Test radicali

Total questions: 15

Worksheet time: 1hrs 6mins

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