Răspuns:
Explicație pas cu pas:
[tex]a=\frac{26-2}{9} +\sqrt{\frac{694-69}{900} }+1,5 =\frac{24}{9}+\sqrt{\frac{625}{900} }+1,5=\frac{24}{9} +\frac{25}{30} +\frac{15}{10}=\frac{8}{3}+\frac{5}{6} +\frac{3}{2}=\frac{8*2+5+3*3}{6} =\frac{30}{6} =5\\ b=90*[\frac{16-1}{90} +\frac{3}{9}]=90*[\frac{15}{90}+\frac{1}{3}]=90*[\frac{1}{6}+\frac{1}{3} ]=90*\frac{1+2}{6} =90*\frac{1}{2} =45\\Atunci~ma=\frac{a+b}{2}=\frac{5+45}{2}=25\\mg=\sqrt{a*b} =\sqrt{5*45}=\sqrt{225}=15[/tex]
