Usmírněné zlomky
Usměrni zlomky:
\large \Large \frac{2}{{3-\sqrt 5 }}\large
\large = \Large \frac{{3+\sqrt 5 }}{3}\large
\large = \Large \frac{{3+\sqrt 5 }}{2}\large
\large = \Large \frac{{2+\sqrt 5 }}{2}\large
\large = \Large \frac{{3-\sqrt 5 }}{2}\large
V tomto příkladu je opět tvým úkolem zbavit se odmocniny ve jmenovateli. Jak to tentokrát provedeš? Jednoduše pomocí vzorce pro rozklad na součin (a – b) ⋅ (a + b) = a2 – b2.
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