Sup, I don't know how to do this. I must operate and then simplify. I have already done more than half of these exercises, but I am having problems with these.
Could someone do it for me please?
some of them are very easy e.g. 17:
eliminate 4 and x^2 and you obtain
I'll do another one:
15) Write the factor on the left as a fraction by determining a common denominator:
(x+1)(x-1) = x^2 - 1
so the term on the left is
(x-1)/(x^2 - 1) + 2(x+1)/(x^2-1) = (3x+1)/(x^2-1)
You can now eliminate x^2-1 (for x different than +/-1) and obtain for the whole term
(3x+1)/(x^2+2x+1) = (3x+1)/(x+1)^2