Toán Lớp 8: mọi người giúp tui :/\
(x+1)(x+2)-x(x+3)
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Toán Lớp 8: mọi người giúp tui :/\
(x+1)(x+2)-x(x+3)
Comments ( 2 )
$=x^2+2x+x+2-x^2-3x$
$=2$
@Nobitao@