Question

Resolva os sistemas
x=3y
xy=48



y=2x
xy=50



x+y=0
xy=-9



x-y=0
xy=100




x+y=5
xy=-14

Answer 1

A) x=3y
xy=48
3.y=48
y=48/3 (18,6)
y=6

x=3y
x=3.6
x=18

B)y=2x
xy=50
x.2x=50
2x^2=50
x^2=50/2
x^2=25
x=(raiz de 25)
x=5

y=2x
y=2.5
y=10


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