Odpowiedzi

2010-04-05T20:53:11+02:00
Rozwiaz rownanie:
(2x-1²) + (x-1)(x+1)=5x²
4x²-4x+1+x²-1=5x²
5x²-4x=5x²
-4x=0
x=0

(10x-6)²=100x(x+2)+36
100x²-120x+36=100x²+200x+36
-120x=200x
320x=0
x=0
2010-04-05T21:04:53+02:00
(2x-1²) + (x-1)(x+1)=5x²
(2x-1)² + (x-1)(x+1)=5x²
4x²-4x+1+(x²-1) = 5x²
4x²-4x+1+x²-1 = 5x²
4x²-5x²+x²-4x = 1-1
-4x = 0 |:(-4)
x = 0

(10x-6)²=100x(x+2)+36
100x²-120x+36 = 100x²+200x+36
100x²-100x²-120x-200x = 36-36
-320x = 0 |:(-320)
x = 0