Question

Determine o X no caso abaixo:

Answer 1

Oi 

x^2 + (y + 5)^2 = 10^2
x^2 + y^2 + 10y + 25 = 100

x^2 + y^2 + 10y - 75 = 0

x^2 + y^2 = (3V5)^2
x^2 + y^2 = 45

45 + 10y - 75 = 0
10y = 75 - 45
10y = 30
y = 3

y + 5 = 8

x^2 + 8^2 = 10^2
x^2 + 64 = 100
x^2 = 100 - 64 = 36

x = 6

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