Odpowiedź :
B. = 3a + a² - 18 - 6a = a² -3a - 18
C. = 2x -8x² -3 + 12x = -8x² + 14x -3
D. = 15a² +3a -5a -1 = 15a² -2a -1
prosze bardzo ;)
C. = 2x -8x² -3 + 12x = -8x² + 14x -3
D. = 15a² +3a -5a -1 = 15a² -2a -1
prosze bardzo ;)
B.(a-6)(3+a)= 3a + a² - 18 - 6a = -3a + a² - 18
C.(2x-3)(1-4x)= 2x - 8x² - 3 + 12x = 14x - 8x² - 3
D.(3a-1)(5a+1)= 15a² + 3a - 5a - 1 = 15a² - 2a - 1
:):)
C.(2x-3)(1-4x)= 2x - 8x² - 3 + 12x = 14x - 8x² - 3
D.(3a-1)(5a+1)= 15a² + 3a - 5a - 1 = 15a² - 2a - 1
:):)