(1/300)^-1/2+10*(√3/2)^1/2*(27/4)^1/4-10*(1/3)^-1
=(300^-1)^-1/2+10*(3^1/2*2^-1)^1/2*(3³*2^-2)^1/4-10*(3^-1)^-1
=300^1/2+10*3^1/4*2^-1/2*3^3/4*2^-1/2-10*3
=300^1/2+10*3^(1/4+3/4)*2^(-1/2-1/2)-10*3
=300^1/2+10*3*2^-1-30
=10*3^1/2+10*3/2-30
=10*3^1/2+15-30
=10*3^1/2-15