Question

Bantu ya no. 11, makasih.

Answer 1

F(x) = x^3 + (a - 3)x^2 + x - 2 habis dibagi (x + 1) => x = -1 artinya
f(-1) = 0 => (-1)^3 + (a - 3)(-1)^2 + (-1) - 2 = 0
=> -1 + a - 3 - 1 - 2 = 0
=> a = 7
f(x) = x^3 + 4x^2 + x - 2 : (x - 2) => x = 2
2 | 1 ... 4 ... 1 ... -2
... | ..... 2 ... 12 .. 26
-------------------------- +
.... 1 .... 6 .... 13 | 24
Hasil bagi = (x^2 + 6x + 13)
Sisa = 24