Add.
-1 + 2 = 1
- 6 + (-5)

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.

Solve each equation using the quadratic formula. find the exact solutions. 6n^2 + 4n - 11