Toán Lớp 9: 5√5x-8√20x +2√5x voi x lon bang 0 giup em voi a
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Toán Lớp 9: 5√5x-8√20x +2√5x voi x lon bang 0 giup em voi a
Comments ( 2 )
5|5x -8|20x +2|5x
=5|5x -16|5x + 2|5x
= (5-16+2)×|5x
=-9|5x