Sagot :
Bonjour,
F(x)= (2x+1)²-(2x+1)(-3x-1)
F(x) = (2x + 1)(2x + 1 - (-3x - 1))
F(x) = (2x + 1)(2x + 3x + 1 + 1)
F(x) = (2x + 1)(5x + 2)
F(x)= (2x+1)²-(2x+1)(-3x-1) = (2x+1) ((2x+1) - (-3x-1)) = (2x+1) (2x+1+3x+1) =
(2x+1)(5x+2)
Bonjour,
F(x)= (2x+1)²-(2x+1)(-3x-1)
F(x) = (2x + 1)(2x + 1 - (-3x - 1))
F(x) = (2x + 1)(2x + 3x + 1 + 1)
F(x) = (2x + 1)(5x + 2)
F(x)= (2x+1)²-(2x+1)(-3x-1) = (2x+1) ((2x+1) - (-3x-1)) = (2x+1) (2x+1+3x+1) =
(2x+1)(5x+2)