Toán Lớp 9: giúp mk mk càn rất gấp
7 +12*căn x+ 5*x
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Toán Lớp 9: giúp mk mk càn rất gấp
7 +12*căn x+ 5*x
Comments ( 2 )
= 5x +5\sqrt{x}+7\sqrt{x}+7
= 5\sqrt{x}(\sqrt{x}+1)+7(\sqrt{x}+1)
=( 5\sqrt{x}+7)(\sqrt{x}+1)