answer is a for both questions
[tex]x^2=75[/tex]
Inverse of squared is square root. [tex]x= \sqrt{75} [/tex]
[tex]x= \sqrt{25*3} [/tex]
[tex]x=5 \sqrt{3} [/tex]
[tex]x^3=16[/tex]
[tex]x= \sqrt[3]{2*2*2*2} [/tex] prime factorization of 16
[tex]x=2 \sqrt[3]{2} [/tex] a set of 3 comes out as one number...i.e. 2