SOLUTION: I know that this one looks easy but every time I do it I get a different answer! Please help... (radical X-radical 3)(radical 6+ 5)

Algebra ->  Radicals -> SOLUTION: I know that this one looks easy but every time I do it I get a different answer! Please help... (radical X-radical 3)(radical 6+ 5)      Log On


   

Question 117418: I know that this one looks easy but every time I do it I get a different answer! Please help... (radical X-radical 3)(radical 6+ 5)
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!

%28sqrt%28x%29-sqrt%283%29%29%28sqrt%286%29%2B5%29 Start with the given expression

Remember, when you FOIL an expression, you follow this procedure:


Multiply the First terms:%28sqrt%28x%29%29%2A%28sqrt%286%29%29=sqrt%286x%29


Multiply the Outer terms:%28sqrt%28x%29%29%2A%285%29=5sqrt%28x%29


Multiply the Inner terms:%28-sqrt%283%29%29%2A%28sqrt%286%29%29=-sqrt%286%2A3%29=sqrt%2818%29=3%2Asqrt%282%29


Multiply the Last terms:%28-sqrt%283%29%29%2A%285%29=-5sqrt%283%29


sqrt%286x%29%2B5sqrt%28x%29-3%2Asqrt%282%29-5sqrt%283%29 Now collect every term to make a single expression