Question

упростите пожалуйста

Answer 1

а)х²+1-х
б)4m+8-3m=m+8

Answer 2

1. $x - frac{x}{x+1} = frac{x(x+1)-x}{x+1} = frac{x^2 + x - x}{x+1} = frac{x^2}{x+1}$
2. 
$frac{m+2}{4m} - frac{1}{m+4} = frac{(m+2)(m+4)-4m}{4m(m+4)} = frac{m^2 + 4m + 2m + 8 - 4m}{4m(m+4)} = frac{m^2+2m+8}{4m(m+4)}$