Question 1
Dans la dernière illustration de la vidéo, quelle est l'aire du rectangle rouge ?
Question 2
(a+b)² = ?
![]()
(a²+b²)![]()
(a²-b²)![]()
(a²+2ab+b²)
Question 3
(2+x)² = ?
![]()
2+4x+x²![]()
4+2x+x²![]()
4+4x+2x²![]()
4+4x+x²
Question 4
(3+2x)² = ?
![]()
9+6x+4x²![]()
9+12x+2x²![]()
9+12x+4x²![]()
3+6x+4x²
Question 5
(a-b)² = ?
![]()
(a²-b²)![]()
(a²-2ab-b²)![]()
(a²-2ab+b²)
Question 6
(3-x)² = ?
![]()
9-2x-x²![]()
9-6x-x²![]()
9-6x+x²![]()
9+6x-x²
Question 7
(5-2x)² = ?
![]()
25-10x+4x²![]()
25+10x-4x²![]()
25-20x-4x²![]()
25-20x+4x²
Question 8
(a-b)(a+b) = ?
![]()
(a² - b²)![]()
(a² + b²)![]()
(b² - a²)
Question 9
(2-x)(2+x) = ?
![]()
4+x²![]()
4-x²![]()
X²-4![]()
X²+4
Question 10
(2-3x)(2+3x) = ?
![]()
4-6x²![]()
4+6x²![]()
4-9x²![]()
4+9x²
Question 11
(2+3x)²-(2-3x)² = ?
![]()
4+2x+4x²![]()
24x![]()
12x![]()
4-9x²
Commentaires