Odpowiedź :
Odpowiedź:
dla x = -1
(2x + 1)(x + 3) = (2 • (-1) + 1)(-1 + 3) = (-2 + 1) • 2 = -1 • 2 = -2
Odp. B
[tex]dla \ \ x = -1\\\\(2x+1)(x+3) = [2\cdot(-1)+1](-1+3) = (-2+1)\cdot2 = -1\cdot2 = -2\\\\Odp. \ B[/tex]
Odpowiedź:
dla x = -1
(2x + 1)(x + 3) = (2 • (-1) + 1)(-1 + 3) = (-2 + 1) • 2 = -1 • 2 = -2
Odp. B
[tex]dla \ \ x = -1\\\\(2x+1)(x+3) = [2\cdot(-1)+1](-1+3) = (-2+1)\cdot2 = -1\cdot2 = -2\\\\Odp. \ B[/tex]