Resposta :

MATHSPHIS
[tex]\boxed{4x^5-7x^2=x^2(4x^3-7)}[/tex]

[tex]\boxed{2ax+2ay-2axy=2x(x+y-xy)}[/tex]

[tex]\boxed{3a^2+3+ba^2+b=3(a^2+1)+b(a^2+1)=(a^2+1)(b+3)}[/tex]

[tex]\boxed{x^3+2x^2+xy+2y=x^2(x+2)+y(x+2)=(x+2)(x^2+y)}[/tex]

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