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4x × (x^2-x) + (x-2) × ( 3x -4x^2)


Răspuns :

[tex]4x( {x}^{2} - x) + (x - 2)(3x - 4 {x}^{2} )[/tex]

[tex] = 4 {x}^{3} - 4 {x}^{2} + 3 {x}^{2} - 4 {x}^{3} - 6x + 8 {x}^{2} [/tex]

[tex] = 7 {x}^{2} - 6x[/tex]