Svp factoriser ses expressions x2+6x+9 36x2-25 9x2-12x+4 49x2-49 100-40x+4x2

Bonsoir,

x² + 6x + 9

= (x)² + (2)(3)(x) + (3)²

= (x + 3)²

36x² - 25

= (6x)² - (5)²

= (6x - 5)(6x + 5)

9x² - 12x + 4

= (3x)² - (2)(2)(3x) + (2)²

= (3x - 2)²

49x² - 49

= (7x)² - (7)²

= (7x - 7)(7x + 7)

100 - 40x + 4x²

= (10)² - (2)(10)(2x) + (2x)²

= (10 - 2x)²

x^2+6x+9= (x+3)^2

36x^2-25= (6x-5)(6x+5)

9x^2-12x+4= (3x-2)^2

49x^2-49= (7x-7)(7x+7)

100-40x+4x^2=(2x-10)^2