Odpowiedzi

2009-09-24T19:43:54+02:00
A) -4 (2x + o,5) = -8x - 2
b) 3 (x² - 2) - ( 5 - 6x²) = 3x² - 6 - 5 +6x²= 9x² -11
c) -3 (1 - 2y) + ½ (6 - 12y) =-3 + 6y + 3 - 6y = 0
d) -(x - 2) -4 (½ - x) = -x + 2 - 2 + 4x = 3x
1 5 1
2009-09-24T19:43:57+02:00
A) -4 (2x+0,5)= (-4) x 2x + (-4) x 0,5 = -8x-2
1 5 1
2009-09-24T19:45:52+02:00
A) -4 (2x + o,5) = -8x-2
b) 3 (x² - 2) - ( 5 - 6x²) = 3x²-6-5+6x²= 9x²-11
c) -3 (1 - 2y) + ½ (6 - 12y) = -3+6y+3-6y= 0
d) -(x - 2) -4 (½ - x) = -x+2-2+4x=3x