Question

scoateti factori de sub radical -radical a la puterea -4/b la patrat, a apartine R , b<0

Answer 1

 

[tex]\displaystyle \bf\\ \sqrt{\frac{a^{-4}}{b^2}}=\sqrt{\frac{1}{a^4b^2}}=\frac{1}{a^2b}[/tex]