P=(-2/3.x ³ .y ²) ².(1/2.x ².y mũ 5) Thu gọn P 02/11/2021 Bởi Bella P=(-2/3.x ³ .y ²) ².(1/2.x ².y mũ 5) Thu gọn P
P=(-2/3.x³.y²)²(1/2x²y⁵)
= 4/9.x⁵.y⁴.1/2.x².y⁵
= (4/9.1/2)(x⁵.x²)(y⁵.y⁴)
P= 4/18x⁷y⁹
`[(-2/3).x^3.y^2]^2.[(1/2).x^2.y^5]`
⇔`(4/9x^6y^4)(1/2x^2y^5)`
⇔`2/9x^8y^9`