Question

(8x):√2=4√10 rapid dau coroana

Answer 1

Răspuns:

$x = \sqrt{5}$

Explicație pas cu pas:

(8x): rad 2 = 4rad 10

((8rad 2)x):2 = 4rad 10

(8rad 2)x = 8rad 10

x = (8rad 10):(8rad 2)

x = rad 5

Answer 2

$\it (8x):\sqrt2 =4\sqrt{10} \Rightarrow 8x=4\sqrt{10}\cdot\sqrt2|_{:4}\Rightarrow 2x=\sqrt{20} \Rightarrow 2x = \sqrt{4\cdot5} \Rightarrow\\ \\ \Rightarrow 2x=2\sqrt5|_{:2}\Rightarrow x = \sqrt5$