Question

решииите оба задания

Answer 1

$frac{a^2-b^2}{b(a+b)}+ frac{b}{(a+b)}= frac{a^2-b^2+b^2}{b(a+b)}= frac{a^2}{b(a+b)} \ frac{( sqrt{3})^2}{ sqrt{27}( sqrt{3}+ sqrt{27})}= frac{3}{3 sqrt{3}*( sqrt{3}+3 sqrt{3})}= frac{1}{12}$

$left { {{5x geq -5} atop {2x<3}} right. \ left { {{x geq -1} atop {x<1.5}} right.$
[-1;1.5)