rational expressions
posted by jose .
1)Can z+6/z+1 be reduced any further?
2)Add and simplify
(v/v^2+8v+16) + (4/v^2+7v+12)
3)For this second binomial do you change the the sign of the second term?
Subtract and simplify
(1y/y2)  (9y8/2y)
4)Solve
(4/5)+(1/2)=(1/x)
5)(8/x)=(9/x)(1/2)
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