Question

factorise them ........................ .................,.......




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Answer 1

Heya here is your answer

1..(x+1)^4-(x-1)^4

=8x^3+8x

=8x (x^2+1

2...... X ^2+1/x^2-4

=(x^4-3x^2 + 1)/X^2

3.......... X ^4+4 x^2+3

=(X^2+1) ( x^2+3)