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(-4x puterea2)(-3x)+(-4x)(+5x puterea2)-(-2x)(-4x)(-3x)+2x(-8xputerea2) si(-8ab)(-5ab)-(-5a puterea2)(-6b puterea2)+(3a)(-10ab puterea2) ajutor!!!

Răspuns :

Renatemambouko
(-4x²)(-3x)+(-4x)(+5x²)-(-2x)(-4x)(-3x)+2x(-8x²) =
=+12x³-20x³+24x³-16x³ =0

 
(-8ab)(-5ab)-(-5a²)(-6b²)+(3a)(-10ab²)=
=+40a²b²-30a²b²-30a²b²=-20a²b²

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