Răspuns:
x=3^80:3^76-10= 3^4-10=71
y=2^40(2^0+2^1+2^2):2^38+1= 4(1+2+4)+1=29
Ma=71+29/2=50
In prima zi 30/100 din x
A doua zi (100-30):2=35/100 din x iar a treia zi tot 35/100 din x = 350 Km rezulta x = 1000 Km.
a) (1/3+1/2+4/5)*30 = (10+15+24)/30*30= 49
b)(3/[tex]\sqrt{27}[/tex]-8/[tex]\sqrt{12}[/tex]+5/[tex]\sqrt{75}[/tex]):[tex]\sqrt{3}[/tex]/12 = (3/3[tex]\sqrt{3}[/tex]-8/2[tex]\sqrt{3}[/tex]+5/5[tex]\sqrt{3}[/tex])*12/[tex]\sqrt{3}[/tex]=(1/[tex]\sqrt{3}[/tex]-4/[tex]\sqrt{3}[/tex]+1/[tex]\sqrt{3}[/tex])*12/radical 3 = (-2/radical 3)*12/radical 3 = -24/3 = -8
(radical a+b)^2020 = (7-8)^2020=1
Explicație pas cu pas:
