Answer:
Step-by-step explanation:
Rationalize the denominator by multiplying both denominator & numerator by the conjugate of the denominator.
Conjugate of the denominator  1 + √3 is 1 - √3

 
        
             
        
        
        
-7z^7(-19z^7) = (-7 x -19) x z^(7 + 7) = 133z^14
        
             
        
        
        
First, you multiply 2/5 by -5 to get -2. Then, you multiply -2 by -2/3 (-4/6's simplified form) to get 1 1/3 as your answer.
        
             
        
        
        
The length is 7 and the width is 3