a) √2.5 ·√10
b)√0.36 ·√100
c) √2,25 ·√0,09
d) (-√3)·(-√75)

Raspuns:
[tex] \sqrt{2,5} * \sqrt{10} = \sqrt{2,5*10} = \sqrt{25} =5[/tex]
[tex] \sqrt{0,36} * \sqrt{100} = \sqrt{0,36*100} = \sqrt{36} =6[/tex]
[tex] \sqrt{2,25}* \sqrt{0,09} = \sqrt{2,25*0,09} = \sqrt{0,2025} =0,45[/tex]
[tex](- \sqrt{3}) *(- \sqrt{75} )= \sqrt{(-3)*(-75)} = \sqrt{225} =15[/tex]

A) √2.5 *√10=√25/√10*√10=√25=5 b)√0.36 *√100=√36/√100*√100=√36=6
c) √2,25 *√0,09=√225/√100*√9/√100=15/10*3/10=45/100=9/20
d) (-√3)*(-√75)= (-√3)*(-5√3)=5*3=15