SOLUTION: Find a cubic function with the given zeros. square root of 5,-square root of 5 and -7

Algebra ->  Square-cubic-other-roots -> SOLUTION: Find a cubic function with the given zeros. square root of 5,-square root of 5 and -7      Log On


   

Question 824969: Find a cubic function with the given zeros.
square root of 5,-square root of 5 and -7
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Find a cubic function with the given zeros.
square root of 5,-square root of 5 and -7

x+=+sqrt%285%29, x+=+-sqrt%285%29 or x+=+-7

x-sqrt%285%29=0, x%2Bsqrt%285%29=0, or x%2B7=0

%28x-sqrt%285%29%29%28x%2Bsqrt%285%29%29%28x%2B7%29=0

%28x%5E2-%28sqrt%285%29%29%5E2%29%28x%2B7%29=0

%28x%5E2-5%29%28x%2B7%29=0

x%5E2%28x%2B7%29-5%28x%2B7%29=0

x%5E3%2B7x%5E2-5x-35=0

==============================================================

Final Answer: x%5E3%2B7x%5E2-5x-35=0