b) x² - xy/x² - y²
c)x³ -2x+1/x-1
b)
x² - xy/x² - y²
x(x-y)/(x-y).(x+y)
x/(x+y) >>
c)x³ -2x+1/x-1 => vou corrigir
x² -2x+1/x-1
(x-1)² / (x-1)
(x-1) >>
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Verified answer
b)
x² - xy/x² - y²
x(x-y)/(x-y).(x+y)
x/(x+y) >>
c)x³ -2x+1/x-1 => vou corrigir
x² -2x+1/x-1
(x-1)² / (x-1)
(x-1) >>