Toán Lớp 8: 2n^3-7n^2+13n+2 : 2n – 1
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Toán Lớp 8: 2n^3-7n^2+13n+2 : 2n – 1
chia đa thức
Comments ( 2 )
=(2n^3-6n^2-n^2+3n+10n+2) / (2n – 1)
=(2n(n^2-3n)-(n^2-3n)+10n+2) / (2n – 1)
=((2n-1)(n^2-3n)+10n+2) / (2n – 1)
=((2n-1)(n^2-3n)) / (2n – 1)+(10n+2)/ (2n – 1)
=n^2-3n+(10n+2)/ (2n – 1)