Question

The factors of X^4+x^2-1 are

Answer 1

Answer:

Step-by-step explanation:

Suppose x^2 be y

= y^2+y+1

Now by middle term spilt

y(y+1) *1 (y + 1 )

= (y+1)*(y+1)

= (y+1)^2

Now replacing y with x^2

=(x^2+1)^2 OR (x^2+1)*(x^2+1)

Done