Http://ru.onlinemschool.com/math/assistance/number_theory/division/ вот тут решай
=-13,24+4,9+8,24-4,9+b=b-5
значит, =31/9-5=31/9-45/9=-14/9= - 1 5/9.
3х⁴ - 48 = 0
3(х⁴ - 16) = 0
3(х² - 4)(х² + 4) = 0
1) х² - 4 = 0
х² = 4
х₁ = 2
х₂ = -2
2) х² + 4 = 0
х² ≠ - 4
Ответ: х₁ = 2;
х₂ = -2.