Question

Calculați
a)
$2 \sqrt{81 } - 3 \sqrt{64} + 4 \sqrt{49} - 5 \sqrt{36}$
b)
$( \sqrt{36} - \sqrt{64} ) \times ( \sqrt{100} - \sqrt{144)}$
c)
$\frac{ \sqrt{1225} }{ \sqrt{441} } \times ( \sqrt{225}$
repede va rog dau coroana ​

Answer 1

Răspuns:

a) 2•9-3•8+4•7-5•6=18-24+28-30= -6+(-2)=-6-2=-8

b) (6-8)(10-12)= -2•(-2)= 4

c) 35/21 • 15= 5/3 •15= 5•5/1=25/1=25

(35/21=5/3)

Answer 2

Răspuns:

Explicație pas cu pas: