9 + 8 × 3 - (5 × 2)=?

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle

Which expression gives the exact value of x?

Can someone plz me understand how to do these. plz, show work.in exercises 1-4, rewrite the expression in rational exponent form.[tex]\sqrt[4]{625} \sqrt[3]{512} (\sqrt[5]{4} )³ (\sqrt[4]{15} )^{7}\\ (\sqrt[3]{27} )^{2}[/tex]