a) \(5x^3yy^2\)
\(=5x^3y^3\)
Có bậc là:
\(3+3=6\)
b) \(5mn^2\cdot\left(-3\right)n\)
\(=5\cdot\left(-3\right)\cdot m\cdot\left(n^2\cdot n\right)\)
\(=-15mn^3\)
Có bậc là:
\(1+3=4\)
c) \(\dfrac{3}{4}\left(a^2b\right)^3\cdot2,5a^3\)
\(=\dfrac{3}{4}a^6b^3\cdot2,5a^3\)
\(=\dfrac{3}{4}\cdot2,5\cdot\left(a^6\cdot a^3\right)\cdot b^3\)
\(=\dfrac{15}{8}a^9b^3\)
Có bậc là:
\(9+3=12\)
d) \(1,5\left(pq\right)^2\cdot4p^3\cdot q^2\)
\(=1,5p^2q^2\cdot4p^3\cdot q^2\)
\(=1,5\cdot4\cdot\left(p^2\cdot p^3\right)\cdot\left(q^2\cdot q^2\right)\)
\(=6p^5q^4\)
Có bậc là:
\(5+4=9\)
a: \(5x^3y\cdot y^2=5x^3y^3\)
Bậc là 3+3=6
b: \(5mn^2\left(-3\right)n=-15mn^3\)
Bậc là 1+3=4
c: \(\dfrac{3}{4}\left(a^2b\right)^3\cdot2.5a^3=\dfrac{3}{4}\cdot\dfrac{5}{2}\cdot a^6b^3\cdot a^3\)
\(=\dfrac{15}{8}a^9b^3\)
Bậc là 9+3=12
d: \(1.5\left(p\cdot q\right)^2\cdot4p^3q^2\)
\(=1.5\cdot4\cdot p^2q^2\cdot p^3q^2=6p^5q^4\)
bậc là 5+4=9
