Odpowiedzi

2010-02-15T19:15:13+01:00
A.
12-4x²+4x²-8x+1-6x+3x²+9+3x-3x-X²=22+5x²-11x

b.
x²-10x+25-3x+1-2x²+1+2x²-3x=x²-16x+27

c.
16-x²-2x+6x²+2(x²+4x+4)-4x²+4=20+x²-2x+2x²+8x+8=28+3x²+6x
2010-02-15T19:15:14+01:00
A) 3x(kwadrat)-6x+2
b)x(kwadrat)-20-5x
c)28-2x-8x(kwadrat)
2010-02-15T19:20:28+01:00
A) 4(3-x²)+4(x-1)²-3x(2-x)+(3-x)(3+x)=
=3x²-6x+2

b) (x-5)²-3(x-1)(x+1)-(2x²-1)+x(2x-3)=
=x²-20-5x

c) (4+x)(4-x)-2x(1-3x)+2(x+2)²-4(x²-1)=
=28-2x-8x²