Question

Разложите на множители:
1) 3x+3y-bx-by
2)x^7+x^3-4x^4-4
3)4a^4-5a^3y-8a+10y
4)xa-xb^2-ya+zb^2-za+yb^2

Answer 1

1) =3(х+у)-в(х+у)=(х+у)(3-в)............2) =х³(х⁴+1)-4(х⁴+1)=(х³-4)(х⁴+1)..........3) =4а(а³-2)-5у(а³-2)=(4а-5у)(а³-2).........4) =х(а-в²)-у(а-в²)-z(a-b²)=(x-y-z)(a-b²)