Question

1)5x^2y-30xy^2+45y^3 2)x^4-3x^3-24x+8 3)x^2(y-z)+y^2(z-x)+z^2(x-y) 4)6a^2-ab-2b^2+3a-2b

Answer 1

Lỗi Latex rùi

Answer 2

2: Ta có: \(x^4-3x^3-24x+8\)

\(=x^3\left(x-3\right)-8\left(x-3\right)\)

\(=\left(x-3\right)\left(x-2\right)\left(x^2+2x+4\right)\)

Answer 3

1: Ta có: \(5x^2y-30xy^2+45y^3\)

\(=5y\left(x^2-6xy+9y^2\right)\)

\(=5y\left(x-3y\right)^2\)

4: Ta có: \(6a^2-ab-2b^2+3a-2b\)

\(=6a^2-4ab+3ab-2b^2+3a-2b\)

\(=\left(3a-2b\right)\left(2a+b+1\right)\)