Question

la ecuacion

5√z/2-1=4

Answer 1

Respuesta:

1/x + 2/y + 1/z = 2

3/x - 4/y - 2/z = 1

2/x + 5/y - 2/z = 3

a= 1/x b = /y c = /z se sustituyen por estas letras .

a + 2b + c = 2

3a - 4b - 2c = 1

2a + 5b - 2c = 3

método de cramer :

Δ= ( 8 -8 +15)-(-8-12-10)= 45

Δa= ( 16-12+5)-( -12-4-20) = 45

Δb= ( -2-8+9)-(2-12-6)=15

Δc = ( -12+4+30)-(-16+18+5)= 15

a =Δa/Δ= 45/45 = 1

b= Δb/Δ = 15/45 = 1/3

c= Δc/Δ = 15/45 = 1/3

a = 1/x → x = 1/a = 1/ 1 = 1 x = 1

b = 1/ y → y = 1/b = 1 /1/3 = 3 y = 3

c = 1/z → z = 1/c = 1 /1/3 = 3 z = 3

Explicación paso a paso: