Question

E(x)=(x/x+2+1/x²-4) (x+1/x-1+2x+5/1-ײ): (1/x-1-1/2x)= 2x​

Answer 1

Răspuns:

Explicație pas cu pas:

E (x)=[x/(x-2)+1/(x²-4)][(x+1)/(x-1)-(2x+5)/x²-1]:(2x-x+1)2x(x-1)=(x²+2x+1/x²-4x)(x²+2x+1-2x-5)/(x²-1):[(x+1/2x(x+1)]=[(x+1)²:(x²-4)][(x²-4)/(x²-1)[2x(x-1)/(x+1)] se simplifica    E(x)=2x