4根号6-4根号1/2+3根号8=4√6-4√(1/2)+3√8=4√6-4√(2/4)+3×√4×√2=4√6-4×√2×√(1/4)+3×2×√2=4√6-4×√2×1/2+6√2=4√6-2√2+6√2=4√6+4√22根号12×根号3/4÷3根号2=2√12×√(3/4)÷3√2=(2÷3)×...