Question

If h=x^2-1/x+1 + x^2-1/x-1 what is x

Answer 1

do u know how to factor x^2-1 ??

Answer 2

Dont you change it to x^2-1^2

Answer 3

yes, and apply a^2-b^2 = (a+b)(a-b)
what do u get here ?

Answer 4

(x+1)(x-1)/(x+1) right?

Answer 5

right ! good.
so what cancels out ?

Answer 6

both of the x+1 so your left with x-1

Answer 7

thats correct :)
and what remains in 2nd term ?

Answer 8

x+1

Answer 9

now add
x-1+x+1 = ?

Answer 10

is it just 2x

Answer 11

so h=2x
hence x= h/2
got it ?

Answer 12

yes thank you

Answer 13

welcome :)