Sagot :
Bonjour
1) (x + 11) = x² + 22x + 121
2) (3x - 7)² = 9x² - 42x + 49
3) (x - 2/3) (x + 2/3) = x² - 4/9
4) (5x - 9) (5x + 9) = 25x² - 81
5) (2x - 1,5)² = 4x² - 6x + 2,25
6) (x + √2)² = x² + 2√2x + 2.
bonjour
( x + 11 )² = x² + 22 x + 121
( 3 x - 7 )² = 9 x² - 42 x + 49
( x - 2/3 ) ( x + 2/3 = x² - 4 /9
( 5 x - 9 ) ( 5 x + 9 ) = 25 x² - 81
( 2 x - 1.5 )² = 4 x² - 6 x + 2.25
( x + √2 ) ² = x² + 2 x √2 + 2