Răspuns
Explicație pas cu pas:
4-x²=(2-x)(2+x)
x²-x-2=x²-2x+x-2=x(x-2)+(x-2)=(x-2)(x+1)
[2/(x+2)+4x/(2+x)(2-x)-6(x+1)/(x-2)(x+1)]*(2-x)=2(2-x)/(x+2)+4x/(2+x)+6=[2(2-x)+4x+6(x+2)/(x+2)=(4-2x+4x+6x+12)/(x+2)=(16+8x)/(x+2)=8
