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hello this is  high school algebra 2

31. Simplify:  a^-2 - b^-2 / a^-1 + b^-1

a.) b - a / ab        b.)1 / ab

c.) b + a / ab        d.) ab  / b - a



32. Simplify: 1 - 1
             -   -              
             p2  q2
            ---------
            2 - 1 - 1
            -   -   -      
            p2  pq  q2

a.) 1 / 2              b.) q + p / 2q + p

c.) 1                  d.) 1 / q



33. Simplify:  x^-2 - x^2 / x^-1 - x

a.) x^2                b.) 1 + x

c.) 1 + x^2 / x        d.) x^2 + 1



34. Simplify: 1 - 1
             -   -
             x   y
             -----
             y - x
             -   -
             x   y


a.) 1         b.) 1 / y - x

c.) y + x     d.) 1 / y + x  

Answer
31. Simplify:  a^-2 - b^-2 / a^-1 + b^-1

c.) b + a / ab


32. Simplify: 1 - 1
            -   -              
            p2  q2
           ---------
           2 - 1 - 1
           -   -   -      
           p2  pq  q2

b.) q + p / 2q + p


33. Simplify:  x^-2 - x^2 / x^-1 - x

c.) 1 + x^2 / x


34. Simplify: 1 - 1
            -   -
            x   y
            -----
            y - x
            -   -
            x   y


d) 1 / y + x

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