Ответы и объяснения

2013-11-04T19:54:58+04:00
8x^2-2x-1/16x^2+8x+1=8x^2-4x+2x-1/(4x+1)^2=4x*(2x-1)+(2x-1)/(4x+1)^2=(4x+1)*(2x-1)/ (4x+1)^2= 2x-1/4x+1