Question

初二数学助学化简2乘根号三分之一减5乘根号四分之三加根号12分之一乘根号12等于?】.

Answer 1

x'表示根号x.2x'(1/3)'-5x'(3/4)'+'(1/12)'x'12'=2x'(1x3/3x3)'-5x('3'/2)+'(1x12/12)'=（2/3)'3'-(5/2)'3'+1=[(2/3)-(5/2)]'3'+1=[（2x2-3x5)/6]'3'+1=1-(11/6)'3'=1-(11/6)(根号3).