A) [tex3]\left(\frac{1-ab}{1+ab}\right)\cdot\left(\frac{a-b}{a+b}\right)[/tex3]
B) [tex3]\left(\frac{1+ab}{1-ab}\right)\cdot\left(\frac{a-b}{a+b}\right)[/tex3]
C) [tex3]\left(\frac{1-ab}{1+ab}\right)\cdot\left(\frac{a+b}{a-b}\right)[/tex3]
D) [tex3]\left(\frac{1+ab}{1-ab}\right)\cdot\left(\frac{-a+b}{a-b}\right)[/tex3]
E) [tex3]\left(\frac{1+ab}{1-ab}\right)\cdot\left(\frac{a+b}{a-b}\right)[/tex3]
Resposta
GAB: E