Question

Tentukan akar akar dari persamaan polinomial berikut!

Answer 1

(x^4-16)(x^4 -18x + 81) =0
(x^2- 4)(x^2 + 4)(x^2 -9)^2 =0
(x+2)(x-2)(x^2+4)(x-3)(x+3)  = 0
x+2 = 0 --> x = -2
x-2 = 0 --> x = 2
x^2 +4 DEFINIT POSITIF
x-3 = 0--> x = -3
x+3 = 0 --> x = 3
.
akar-akarnya = (-3,-2,2,3}