16 Addition et Soustraction d’Expressions Rationnelles
![\[\displaystyle{ \frac{P}{Q} + \frac{S}{T} = \frac{P T + Q S }{ST} } \qquad\qquad \qquad\qquad \displaystyle{ \frac{P}{Q} - \frac{S}{T} = \frac{P T - Q S }{ST} } \]](https://ecampusontario.pressbooks.pub/app/uploads/quicklatex/quicklatex.com-b9f992cf8532a45d9b7bace60b74166a_l3.png "Rendered by QuickLaTeX.com")
![\[\displaystyle{ \frac{P}{R} + \frac{S}{R} = \frac{P + S }{R} } \qquad\qquad \qquad\qquad\displaystyle{ \frac{P}{R} - \frac{S}{R} = \frac{P - S }{R} }\]](https://ecampusontario.pressbooks.pub/app/uploads/quicklatex/quicklatex.com-5dfce3b1922d5b80d701ce9cb9de759e_l3.png "Rendered by QuickLaTeX.com")
Exercice 1
Afficher/Masquer Solution.
On a
La fraction est irréductible car le discriminant de 
est 
.
Exercice 2
Afficher/Masquer Solution.
On a
.
Exercice 3
Afficher/Masquer Solution.
On a
.
