Răspuns: a. rad 14. rad 20, rad 25, rad 27, rad 30, rad 32
b. rad 120, rad 144, rad 147, rad 150, rad 162, rad 400
c.31,12rad7, 15rad5, 24rad2, 12rad30
Explicație pas cu pas:
a. 5=[tex]\sqrt{25}[/tex]
2[tex]\sqrt{7}[/tex]=[tex]\sqrt{7x4} =\sqrt{14}[/tex]
[tex]3\sqrt{3} =\sqrt{3*9} =\sqrt{27}[/tex]
[tex]4\sqrt{2} =\sqrt{2*16} =\sqrt{32}[/tex]
[tex]2\sqrt{5} =\sqrt{5*4} =\sqrt{20}[/tex]
b. [tex]12=\sqrt{144}
[tex]5\sqrt{6} =\sqrt{6*25} =\sqrt{150}
\\9\sqrt{2} =\sqrt{2*81} =\sqrt{162} \
\4\sqrt{10} =\sqrt{4*100} =\sqrt{400} \
\2\sqrt{30} =\sqrt{30*4} =\sqrt{120} \\
7\sqrt{3} =\sqrt{3*49} =\sqrt{147}[/tex]
c. [tex]31=\sqrt{961} \\24\sqrt{2} =\sqrt{2*576} =\sqrt{1152} \\15\sqrt{5} =\sqrt{5*225} =\sqrt{1125} \\12\sqrt{30} =\sqrt{30*144} =\sqrt{4320} \\12\sqrt{7} =\sqrt{7*144} =\sqrt{1008}[/tex]
