Odpowiedzi

2010-03-08T22:29:23+01:00
X² - 1 - 5(9x² - 16) - 10x - 2x² - 15 - 3x =
= x² - 1 - 45x² + 80 - 10x - 2x² - 15 - 3x =
= -46x² - 13x + 64
2010-03-08T22:30:07+01:00
(x-1)(x+1)-5(3x-4)do 2 -(2x+3)(5+x)
x²-1²-5(9x²-24x+16)-(10x+2x²+15+3x)=x²-1-45x²+120x-80-10x-2x²-15-3x=-42x²+107x-96
2010-03-08T22:32:22+01:00
(x-1)(x+1)-5(3x-4)²-(2x+3)(5+x)=x²+x-x-1-5(9x²-24x+16)-(10x+2x²+15+3x)=
=x²-1-45x²+120x-80-10x-2x²-15-3x=-46x²+107x-96
1 5 1