Question

i . factorise x^4-4​

Answer 1

Answer:

x^4 -4

=( x^2)^2 -2 ^2

=( x^2 +2)(x^2-2)

Answer 2

Answer:

x^4-4

=(x^2)^2 - (2)^2

=(x^2-2)(x^2+2)