Question

dau coroana, va rogggg​

Answer 1

a) $\sqrt{2304}$ · $( \sqrt{225} - \sqrt{1225} ) + \sqrt{1600}$ =

= $48$ · $( 15 - 35) + 40$ =

= $48$ · $(-20) + 40$ =

= $-960 + 40$ =

= - 920

b) √5·√25 + √7·√49 - √9·√16 =

= √5·5 + √7·7 - √9·4 =

= √5² + √7² - 3 · 2 =

= 5 + 7 - 6 =

= 6

c) √1 + 7√25 - √11√36 - 2 + √23√9 + 3√16 =

= √1 + 7 · 5 - √11 · 6 - 2 + √23 · 3 + 3 · 4 =

= $\sqrt{1+35} - \sqrt{66-2} + \sqrt{69 + 12}$ =

= $\sqrt{36} - \sqrt{64} + \sqrt{81}$ =

= 6 - 8 + 9 =

= 7

d) $\sqrt{\sqrt{144} + 13 }$ $+ \sqrt{3\sqrt{324} + 7\sqrt{225} - \sqrt{64} -7 }$ =

= $\sqrt{12+13}$ + √3 · 18 + 7 · 15 - 8 - 7 =

= $\sqrt{25} + \sqrt{54+105-8-7}$ =

= $5 + \sqrt{144}$ =

= $5+12$ =

= 17

Sper că te-am ajutat, o zi frumoasă!