Exercice \( N^{0} 13: \) Soit \( A=A=2+3 \sqrt{5} \) er \( B=2-3 \sqrt{5} \) 1. Calculer \( A^{2} ; B^{2} A \times B \) 2. Démontrer que \( C=\frac{A}{B}+\frac{1}{4} \) est un nombre rationnel

[-/2 Points] DETAILS MY NOTES TGEIALG6 2.5.053. The perimeter of a regulation singles tennis court is 210 feet and the length is 3 feet less than three times the width. What are the dimensions (in ft ) of the court width length

Show A and Show B are two television shows. The number of eplsodes of each show are consecutive integers whose sum is 233 . If there are more episodes of Show B, how many episodes of each were there? Show A Show B episodes Submit Answer

Factorise coumpletely. \( 21 a^{2}+28 a^{b} \)

(b) \( 27 x^{2}-3 y^{2} \)

A. Déterminer la forme canonique de chacun des polynômes suivants : 1. \( P(x)=3 x^{2}-6 x+9 \) 2. \( P(x)=-5 x^{2}+3 x+12 \) 3. \( P(x)=9 x^{2}-7 x \)