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Va rog. Calculati:
A) (3*√5625+6*√2704-2*√961):(3√6561-√1849)=?
B)1 1/4*√0,0225-0,(3)*√0,81+0,2(7)*√0,0324
C) 2,(3)*√0,(1)+√324/25:√81/225-√1024:√64
Vă rog. Am nevoie ca m am blocat la ele.multumesc !

Răspuns :

Renatemambouko
A) (3*√5625+6*√2704-2*√961):(3√6561-√1849)=
=(3*75+6*52-2*31):(3*81-43)=
=(225+312-62):(243-43)=
=475:200=2,375
B)1 1/4*√0,0225-0,(3)*√0,81+0,2(7)*√0,0324=
=5/4*0,15-3/9*0,09+(27-2)/90*0,18=
=0,1875-0,03+25/90*0,18=
=0,1875-0,03+0,05=0,2075

 C) 2,(3)*√0,(1)+√324/25:√81/225-√1024:√64=
=(23-2)/9  *1/3 +18/5:9/15 -32:8=
=21/9  *1/3 +18/5x 15/9 -4=
=7/9  +2/1x 3/1 -4=
=7/9  +6-4=
=7/9  +2=
=(7+18)/9=25/9