根号32-3倍的根号下二分之一+根号下八分之一

√ 32-3√ (1/2)+√(1/8)
=4√2-3√ (1*2/2*2)+√(1*2/8*2)
=4√2-3√ (2/4)+√(2/16)
=4√2-3/2*√2+1/4*√2
=(4-3/2+1/4)*√2
=(4-3/2+1/4)*√2
=11/4√2

√ 32-3√ (1/2)+√(1/8)
=4√2-3√ (1*2/2*2)+√(1*2/8*2)
=4√2-3√ (2/4)+√(2/16)
=4√2-3/2*√2+1/4*√2
=(4-3/2+1/4)*√2
=(4-3/2+1/4)*√2
=11/4√2 应该是这样

根号32-3倍的根号下二分之一+根号下八分之一
=4√2-2分之3√2+4分之√2
=4分之15√2