Manipulating the quadratic formula
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The problem is from Numerical Methods. Please show each step of your solution and tell me the theorems, definitions, etc. if you use any.
12. Improving the quadratic formula...
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Solution Summary
This solution shows how to manipulate the quadratic formula into a given form.
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Ok, as for x1, we have:
x1= (-b+sqrt(b^2- 4ac))/(2a)
Now we multiply the top and the bottom by (-b- sqrt(b^2- 4ac)) i.e.
x1= [(-b+sqrt(b^2- 4ac))/(2a)]* [ (-b- sqrt(b^2- 4ac))/(-b- sqrt(b^2- 4ac))], so
x1= [(-b+sqrt(b^2- ...
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