bonjour
4 x² - 5 = x² + 13
4 x² - x² = 13 + 5
3 x² = 18
x² = 6
x = √6 ou - √6
5 x² - 2 = 7 x² - 6
5 x² - 7 x² = - 6 + 2
- 2 x² = - 4
x² = 2
x = √2 ou - √ 2
( x + 2 )² = 9
( x + 2 )² - 9 ) = 0
( x + 2 - 3 ) ( x + 2 + 3 ) = 0
( x - 1 ) ( x + 5 ) = 0
x = 1 ou - 5
( x - 2 )² = 11
(x - 2 )² - ( √11 )² = 0
( x - 2 - 11 ) ( x - 2 + 11 ) = 0
( x - 13 ) ( x + 9 ) = 0
x = 13 ou - 9
( 3 x + 5 )² = 13
( 3 x + 5 )² - ( √13 )² = 0
( 3 x + 5 - 13 ) ( 3 x + 5 + 13 ) = 0
( 3 x - 8 ) ( 3 x + 18 ) = 0
x = 8/3 ou - 18/3 = - 6
( 2 x - 3 )² = 16
( 2 x - 3 )² - 16 = 0
( 2 x - 3 - 4 ) ( 2 x - 3 + 4 ) = 0
( 2 x - 7 ) ( 2 x + 1 ) = 0
x = 7/2 ou - 1 /2
( - 2 x + 1 )² = 8
( - 2 x + 1 )² - ( √8 )² = 0
( - 2 x + 1 - 8 ) ( - 2 x + 1 + 8 ) = 0
( - 2 x - 7 ) ( - 2 x + 9 ) = 0
x = - 7/2 ou 9/2
( 4 x + 1 )² = - 2
pas de solution dans R
