Question

Câu d, e nhé ạ, trc 5h30 sáng nay nhé ạ

Answer 1

a: \(=-x^3y^3+\dfrac{1}{2}x^4y^2-\dfrac{3}{4}x^4y^3\)

b: \(=-2x^4y+\dfrac{5}{2}x^2y^2-x^2y\)

c: \(=2x^3+x^2-2x+6x^2+3x-6\)

\(=2x^3+7x^2+x-6\)

d: \(=\left(6x^2+x-2\right)\left(3-x\right)\)

\(=18x^2-6x^3+3x-x^2-6+2x\)

\(=-6x^3+17x^2+5x-6\)