a) 4/ 5- √3 ( eu usei o / para indicar que é uma fração)
b)6/5-√2
4/(5 - √3) = 4*(5 + √3)/(5 - √3)*(5 + √3) = (20 + 4√3)/(25 - 3) = (10 + 2√3)/11
6/(5 - √2) = 6*(5 + √2)/(5 + √2)*(5 - √2) = (30 + 6√2)/(25 - 2) = (30 + 6√2)/23
pronto
a) 4/ 5- â3=
4(5+â3):(5- â3)(5+â3)=
4(5+â3):(5²-3)=
4(5+â3):(25-3)=
4(5+â3):22=
(5+â3):5,5
b)
6/5-â2=
6(5+V2):(5+V2)(5-V2)=
6(5+V2):25-2=
6(V2+5):23
.
4..........5+â3....4(5+â3)...4(5+â3)....2(5+â3)
------ x ------- = ---------- = ---------- = -----------
5-â3....5+â3.....25-3.........22............11
6..........5+â2....6(5+â2)....6(5+â3)
------ x ------- = ---------- = ----------
5-â2....5+â2.....25-2..........23
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Verified answer
4/(5 - √3) = 4*(5 + √3)/(5 - √3)*(5 + √3) = (20 + 4√3)/(25 - 3) = (10 + 2√3)/11
6/(5 - √2) = 6*(5 + √2)/(5 + √2)*(5 - √2) = (30 + 6√2)/(25 - 2) = (30 + 6√2)/23
pronto
a) 4/ 5- â3=
4(5+â3):(5- â3)(5+â3)=
4(5+â3):(5²-3)=
4(5+â3):(25-3)=
4(5+â3):22=
(5+â3):5,5
b)
6/5-â2=
6(5+V2):(5+V2)(5-V2)=
6(5+V2):25-2=
6(V2+5):23
.
.
4..........5+â3....4(5+â3)...4(5+â3)....2(5+â3)
------ x ------- = ---------- = ---------- = -----------
5-â3....5+â3.....25-3.........22............11
6..........5+â2....6(5+â2)....6(5+â3)
------ x ------- = ---------- = ----------
5-â2....5+â2.....25-2..........23