1. \((a^2b^2xy^2z^{n-1})(-b^3cx^4z^{7-n})=-a^2b^5cx^5y^2z^6\)
Hệ số: $-a^2b^5c$
Bậc: $5+2+6=13$
2.
\((\frac{-9}{10}a^3x^2y).(\frac{-5}{3}ax^5y^2z)^3=\frac{25}{6}a^6x^{17}y^7z^3\)
Hệ số: $\frac{25}{6}a^6$
Bậc: $17+7+3=27$
3.
\(\frac{1}{2}ax^2y^3(\frac{-1}{3}abx^2y^2)=\frac{-1}{6}a^2bx^4y^5\)
Hệ số: $\frac{-1}{6}a^2$
Bậc: $4+5=9$
4.
\(1\frac{1}{4}x^2y.(\frac{-5}{6}x^{10}y^2)^0(-2\frac{1}{3}abxy^2)=\frac{5}{4}x^2y.(-\frac{7}{3}abxy^2)=\frac{-35}{12}abx^3y^3\)
Hệ số: $\frac{-35}{12}ab$
Bậc: $3+3=6$
5.
\((\frac{-ab}{2}xy^2)^3.3axy^2.4a^2x^3=\frac{-a^3b^3}{8}x^3y^6.3axy^2.4a^2x^3\)
\(=-\frac{3}{2}a^6b^3x^7y^8\)
Hệ số: $\frac{-3}{2}a^6b^3$
Bậc: $7+8=15$
6.
\(3abxy(\frac{-1}{5}ax^2yz)(-3abx^3y^2z^3)=\frac{9}{5}a^3b^2x^6y^4z^4\)
Hệ số: $\frac{9}{5}a^3b^2$
Bậc: $6+4+4=14$
