1.根号下14×12
=根号下(14×3×2^2)
=2根号下42
2.根号下12a的三次方b的三次方c的三次方(a>0,b>0,c>0)
=根号下[(2abc)^2×(3abc)]
=2abc根号下3abc
3.根号下25²-9²
=根号下[(25+9)(25-9)]
=根号下(34×16)
=4根号下34
化简1.根号下14×12,2.根号下12a的三次方b的三次方c的三次方(a>0,b>0,c>0)3.根号下25²-9²
化简1.根号下14×12,2.根号下12a的三次方b的三次方c的三次方(a>0,b>0,c>0)3.根号下25²-9²
数学人气:223 ℃时间:2019-08-19 15:58:19
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