Question

Mọi người giúp em với ạ!!!1

Answer 1

d: Ta có: \(D=\left(7x^5y^4z^3-3x^4z^2+2x^2y^2z\right):\left(x^2yz\right)\)

\(=7x^3y^3z^2-\dfrac{3x^2z}{y}+2y\)

\(=-7\cdot1\cdot2^2-\dfrac{3\cdot2}{1}+2\cdot1\)

\(=-28-6+2=-32\)

Answer 2

a: Ta có: \(A=\left(20x^5y^4+10x^3y^2-5x^2y^3\right):\left(5x^2y\right)\)

\(=4x^3y^3+2xy-5y^2\)

\(=-4-2-5\)

=-13

b: Ta có: \(B=\left(-2x^2y^2+xy^2-6xy\right):\left(\dfrac{1}{3}xy\right)\)

\(=-6xy+3y-18\)

\(=-6\cdot\dfrac{1}{2}+3-18\)

=-18