题目

方程2x(x﹣3)=5(x﹣3)的根是( ) A.x=                               B.x=3   C.x1=,x2=3                        D.x1=﹣,x2=﹣3 答案:C解:方程变形为:2x(x﹣3)﹣5(x﹣3)=0, ∴(x﹣3)(2x﹣5)=0, ∴x﹣3=0或2x﹣5=0, ∴x1=3,x2=.  It`s _______here. We can`t work long hours here. A.very much cold   B.much cold    C.much too cold   D.too much cold
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