Question

Factorise the following by using factor theorem (x^4-5x^2+4).

Answer 1

Answer:

(x^2-4)(x^2-1)

Step-by-step explanation:

x^4-5x^2+4

x^4-x^2-4x^2+4

x^2(x^2-1)-4 (x^2-1)

(x^2-4)(x^2-1)

Hope it helps...