a fost răspuns

Cum se descompune in factori (3x+4)(2x-1)-(1-2x)(2x+1)?? ms

Răspuns :

[tex]...=(3x+4)(2x-1)+(2x-1)(2x+1)=[/tex]

[tex]=(2x-1)(3x+4+2x+1)=(2x-1)(5x+5)=5(2x-1)(x+1)[/tex]
[tex]E=(3x+4)(2x-1)-(1-2x)(2x+1) \\ E=(3x+4)(2x-1)+(2x-1)(2x+1) \\ E=(2x-1)(3x+4+2x+1) \\ E=(2x-1)(5x+5) \\ E=5(2x-1)(x+1)[/tex]

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