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a fost răspuns

Va rog ajutai-ma repede acord coroana

1.(2x-3)*(3x+1)+(5-2x)*(3x+1)=
2.(x+2)*(3-2x)+(4x+1)*(3-2x)+3-2x=
3. 5(4x-3)+(4x-3)*(2-3x)-(2x+5)*(4x-3)

Răspuns :

Hell0
1.(2x-3)*(3x+1)+(5-2x)*(3x+1)=
6x^2+2x−9x−3+15x+5−6x^2−2x= 6x+2
2.(x+2)*(3-2x)+(4x+1)*(3-2x)+3-2x=
3x−2x^2+6−4x+12x−8x^2+3−2x+3−2x= −10x^2+7x+12
3. 5(4x-3)+(4x-3)*(2-3x)-(2x+5)*(4x-3)=
20x−15+8x−12x^2−6+9x−8x^2−14x+15= −20x^2+23x−6


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