Ola matheus
(x-8)²+(x-1)²=(x+1)²
x² - 16x + 64 + x² - 2x + 1 = x² + 2x + 1
x² - 20x + 64 = 0
delta
d² = 400 - 256 = 144
d = 12
x1 = (20 + 12)/2 = 16
x2 = (20 - 12)/2 = 4
pronto
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Ola matheus
(x-8)²+(x-1)²=(x+1)²
x² - 16x + 64 + x² - 2x + 1 = x² + 2x + 1
x² - 20x + 64 = 0
delta
d² = 400 - 256 = 144
d = 12
x1 = (20 + 12)/2 = 16
x2 = (20 - 12)/2 = 4
pronto