Question

Ajutooor!!!! Exercitiile încercuite

Answer 1

11) a=11•{3+5•[200-3•(442-80•5)]}+17
a=11•{3+5•[200-3•(442-400)]}+17
a=11•[3+5•(200-3•42)]+17
a=11•[3+5•(200-126)]+17
a=11•(3+5•74)+17
a=11•(3+370)+17
a=11•373+17
a=4103+17=>a=4120

b=100+2•{2+2 [222-2•(2 020-40×50)]}
b=100+2•{2+2 [222-2•(2 020-2 000)]}
b=100+2•[2+2 (222-2•20)]
b=100+2•[2+2 (222-40)]
b=100+2•(2+2•182)
b=100+2•(2+364)
b=100+2•366
b=100+732=>b=832

a=4120 > b=832

13) a) 5•[5+5•(5^3-5^5:5^3)]+3•5^2=
5•[5+5•(5^3-5^2)]+3•5^2=
5•(5+5^4-5^3)+3•5^2=
5^2+5^5-5^4+3•5^2=
25+3125-625+3•25=
3150-625+75=
2525+75=2600