Question

Calcule:
a)√18/2 = b) √36 +∛8 =

c) √5.√10.√2 = d) √27 - 2√3=

Answer 1

Resposta:

$a) \sqrt{ \frac{18}{2} } = \sqrt{9} = 3$

$b) \sqrt{36} + \sqrt{8}$

$\sqrt{ {2}^{2} \times {3}^{2} } + \sqrt{ {2}^{2} \times 2}$

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

$c) \sqrt{5} \times \sqrt{10} \times \sqrt{2}$

$\sqrt{5 \times 10 \times 2} = \sqrt{100} = 10$

$d) \sqrt{27} - 2 \sqrt{3} = \sqrt{ {3}^{2} \times 3} - 2 \sqrt{3}$

$3 \sqrt{3} - 2 \sqrt{3} = (3 - 2) \sqrt{3} = \sqrt{3}$

Espero ter te ajudado.