1 5xy (2x²+3y-2)= 2 (2x²+3x-2)-2 (3x²-x)=

1. 5xy(2x²) + 5xy(3y)+5xy(-2)
=>> 10x^3y+15xy² -10xy
2. 2x² -6x² + 3x+2x -2= -4x²+5x-2

Mapel : Matematika
Kelas : VII SMP
Bab : Aljabar

Pembahasan :
5xy(2x² + 3y - 2)
= (5xy)(2x²) + (5xy)(3y) + (5xy)(-2)
= 10x³y + 15xy² - 10xy

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(2x² + 3x - 2) - 2(3x² - x)
= (2x² + 3x - 2) - 2(3x²) + (-2)(-x)
= 2x² + 3x - 2 - 6x² + 2x
= (2 - 6)x² + (3 + 2)x - 2
= -4x² + 5x - 2