kalikanlah bentuk aljabar berikut dijawab y kakak kakak...kalo bisa pake jalan

1. 10 x² + 20
2. x³ - x² + x - 1
3. 8x²-8x³
4. x² + 6x +9
5. tulisan kamu kurang jelas

1. 10 ( x² + 2 )
= 10x² + 10 × 2
= 10x² + 20

2. ( x - 1 ) × ( x² + 1 )
= xx² + x - x² - 1
= x³ x - x² - 1

3. 4x² × ( 2 - 2x )
= 4x² × 2 - 4x² × 2x
= 8x² - 8x³

4. ( x + 3 )²
= x² + 2x × 3 + 3²
= x² + 6x + 9

5. ( 6xy - 1 ) ( x² - xy + 5 )
= 6x³y - 6x²y²+ 30xy - x² + 1xy - 5
= 6x³y - 6x²y² + 31xy - x² - 5

semoga membantu :)