Question

Calculează:
Dau coroana dacă nu e răspuns prostesc

Answer 1

Explicație pas cu pas:

a)

$= \sqrt{5 \times 3} = \sqrt{15}$

b)

$= \sqrt{12 \div 3} = \sqrt{4} = 2$

c)

$= \sqrt{18 \div 6} = \sqrt{3}$

d)

$= 8 \sqrt{6 \times 5} \div (2 \sqrt{10)} = 8 \sqrt{30} \div (2 \sqrt{10)} = 4 \sqrt{30 \div 10} = 4 \sqrt{3}$

e)

$= 15 \sqrt{2 \times 7} = 15 \sqrt{14}$

f)

$= 7 \sqrt{3 \times 2} = \sqrt{6}$

g)

$= 2 \sqrt{9 \div 3} = 2 \sqrt{3}$

h)

$= 21 \sqrt{20 \div 10} = 21 \sqrt{2}$

i)

$= \sqrt{5 \times 3} = \sqrt{15}$

j)

$= 48 \sqrt{9 \times 8} : (3 \sqrt{6}) = 48 \sqrt{72} : (3 \sqrt{6}) = 16 \sqrt{72 \div 6} = 16 \sqrt{12} = 16 \sqrt{ {2}^{2} \times 3} = 16 \times 2 \sqrt{3} = 32 \sqrt{3}$

k)

$= 2 \sqrt{3} \times 3 \sqrt{2} = 6 \sqrt{6}$

l)

$= 2 \sqrt{3} : 2 \sqrt{3} = 1$