Question

(3x-1)elevado a 2 +(x-2)elevado a 2=25

Answer 1

Olá Saxumi 

(3x - 1)² + (x - 2)² = 25 

9x² - 6x + 1 + x² - 4x + 4 = 25

10x² - 10x - 20 = 0

x² - x - 2 = 0

delta
d² = 1 + 8 = 9
d = 3

x1 = (1 + 3)/2 = 4/2 = 2
x2 = (1 - 3)/2 = -2/2 = -1

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