SOLUTION: ( sqrt 5 - sqrt7)^2 answer:12 - 2 sqrt 35 ok so i tried the foil method and i got sqrt 5 sqrt7 as my answer can anyone tell me how my book got 12-2 sqrt 35 as an ans

Algebra ->  Algebra  -> Signed-numbers -> SOLUTION: ( sqrt 5 - sqrt7)^2 answer:12 - 2 sqrt 35 ok so i tried the foil method and i got sqrt 5 sqrt7 as my answer can anyone tell me how my book got 12-2 sqrt 35 as an ans      Log On

 Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations! Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help!

 Algebra: Operations with Signed Numbers Solvers Lessons Answers archive Quiz In Depth

 Click here to see ALL problems on Signed-numbers Question 195531: ( sqrt 5 - sqrt7)^2 answer:12 - 2 sqrt 35 ok so i tried the foil method and i got sqrt 5 sqrt7 as my answer can anyone tell me how my book got 12-2 sqrt 35 as an answer Answer by jim_thompson5910(28595)   (Show Source): You can put this solution on YOUR website! Start with the given expression. Expand. Remember something like . Now let's FOIL the expression. Remember, when you FOIL an expression, you follow this procedure: Multiply the First terms:. Multiply the Outer terms:. Multiply the Inner terms:. Multiply the Last terms:. --------------------------------------------------- So we have the terms: , , , and Now add every term listed above to make a single expression. Now combine like terms. So FOILs to . In other words, .