Please can you help me on this equation.I just cant seem to solve this though i mostly don't need help.Thank you (1)/(x^2+1) -(x^4)/(x^2+1)+(x^4)/(x^2-1) -(1)/(x^2-1)

Question

Please can you help me on this equation.I just cant seem to solve this though i mostly don't need help.Thank you
`(1)/(x^2+1) -(x^4)/(x^2+1)+(x^4)/(x^2-1) -(1)/(x^2-1)`

Answer 1

2

Explanation:

combine like denominators:

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

factor:

(1-x^2)(1+x^2)/(x^2+1)+(x^2+1)(x^2-1)/(x^2-1)

reduce:

(1-x^2)+(x^2+1)

1+1=2